70797678961 has 4 divisors (see below), whose sum is σ = 70798828032. Its totient is φ = 70796529892.

The previous prime is 70797678943. The next prime is 70797678983. The reversal of 70797678961 is 16987679707.

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 70797678961 - 2¹¹ = 70797676913 is a prime.

It is a super-2 number, since 2×70797678961² (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 (70797678901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476545 + ... + 607198.

It is an arithmetic number, because the mean of its divisors is an integer number (17699707008).

Almost surely, 2^70797678961 is an apocalyptic number.

It is an amenable number.

70797678961 is a deficient number, since it is larger than the sum of its proper divisors (1149071).

70797678961 is a wasteful number, since it uses less digits than its factorization.

70797678961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149070.

The product of its (nonzero) digits is 56010528, while the sum is 67.

The spelling of 70797678961 in words is "seventy billion, seven hundred ninety-seven million, six hundred seventy-eight thousand, nine hundred sixty-one".