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87237004897 = 712462429271
BaseRepresentation
bin101000100111110111…
…0110000111001100001
322100011200211000101101
41101033232300321201
52412130133124042
6104024235434401
76205546210150
oct1211756607141
9270150730341
1087237004897
1133aa7018a69
1214aa75b5a01
1382c3580533
144317d8b597
152408a016b7
hex144fbb0e61

87237004897 has 4 divisors (see below), whose sum is σ = 99699434176. Its totient is φ = 74774575620.

The previous prime is 87237004847. The next prime is 87237004901. The reversal of 87237004897 is 79840073278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87237004897 - 211 = 87237002849 is a prime.

It is a super-2 number, since 2×872370048972 (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 (87237004807) 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 3 ways as a sum of consecutive naturals, for example, 6231214629 + ... + 6231214642.

It is an arithmetic number, because the mean of its divisors is an integer number (24924858544).

Almost surely, 287237004897 is an apocalyptic number.

It is an amenable number.

87237004897 is a deficient number, since it is larger than the sum of its proper divisors (12462429279).

87237004897 is a wasteful number, since it uses less digits than its factorization.

87237004897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12462429278.

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 87237004897 in words is "eighty-seven billion, two hundred thirty-seven million, four thousand, eight hundred ninety-seven".

Divisors: 1 7 12462429271 87237004897