70671070781 has 16 divisors (see below), whose sum is σ = 72270619200. Its totient is φ = 69085661568.

The previous prime is 70671070777. The next prime is 70671070793. The reversal of 70671070781 is 18707017607.

It is a cyclic number.

It is not a de Polignac number, because 70671070781 - 2² = 70671070777 is a prime.

It is a super-2 number, since 2×70671070781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70671070751) 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 15 ways as a sum of consecutive naturals, for example, 13564505 + ... + 13569713.

It is an arithmetic number, because the mean of its divisors is an integer number (4516913700).

Almost surely, 2^70671070781 is an apocalyptic number.

It is an amenable number.

70671070781 is a deficient number, since it is larger than the sum of its proper divisors (1599548419).

70671070781 is a wasteful number, since it uses less digits than its factorization.

70671070781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508.

The product of its (nonzero) digits is 115248, while the sum is 44.

The spelling of 70671070781 in words is "seventy billion, six hundred seventy-one million, seventy thousand, seven hundred eighty-one".