70997697311 has 4 divisors (see below), whose sum is σ = 73445893800. Its totient is φ = 68549500824.

The previous prime is 70997697293. The next prime is 70997697317. The reversal of 70997697311 is 11379679907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70997697311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70997697317) 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, 1224098201 + ... + 1224098258.

It is an arithmetic number, because the mean of its divisors is an integer number (18361473450).

Almost surely, 2^70997697311 is an apocalyptic number.

70997697311 is a deficient number, since it is larger than the sum of its proper divisors (2448196489).

70997697311 is a wasteful number, since it uses less digits than its factorization.

70997697311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448196488.

The product of its (nonzero) digits is 4500846, while the sum is 59.

The spelling of 70997697311 in words is "seventy billion, nine hundred ninety-seven million, six hundred ninety-seven thousand, three hundred eleven".