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70761870641 = 7211671959457
BaseRepresentation
bin100000111100110111…
…1000111010100110001
320202122111221110220202
41001321233013110301
52124410014330031
652301344244545
75053354655600
oct1017157072461
9222574843822
1070761870641
112801225a830
121186a010755
13689923a297
1435d3c97a37
151c924552cb
hex1079bc7531

70761870641 has 24 divisors (see below), whose sum is σ = 91138310496. Its totient is φ = 54316120320.

The previous prime is 70761870631. The next prime is 70761870671. The reversal of 70761870641 is 14607816707.

It is a happy number.

It is not a de Polignac number, because 70761870641 - 26 = 70761870577 is a prime.

It is a super-2 number, since 2×707618706412 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70761870611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 943616 + ... + 1015841.

It is an arithmetic number, because the mean of its divisors is an integer number (3797429604).

Almost surely, 270761870641 is an apocalyptic number.

It is an amenable number.

70761870641 is a deficient number, since it is larger than the sum of its proper divisors (20376439855).

70761870641 is a wasteful number, since it uses less digits than its factorization.

70761870641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959549 (or 1959542 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 70761870641 in words is "seventy billion, seven hundred sixty-one million, eight hundred seventy thousand, six hundred forty-one".

Divisors: 1 7 11 49 67 77 469 539 737 3283 5159 36113 1959457 13716199 21554027 96013393 131283619 150878189 918985333 1056147323 1444119809 6432897331 10108838663 70761870641