69634995457 has 4 divisors (see below), whose sum is σ = 71254414000. Its totient is φ = 68015576916.

The previous prime is 69634995433. The next prime is 69634995461. The reversal of 69634995457 is 75459943696.

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 a de Polignac number, because none of the positive numbers 2^k-69634995457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69634995392 and 69634995401.

It is not an unprimeable number, because it can be changed into a prime (69634995427) 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, 809709207 + ... + 809709292.

It is an arithmetic number, because the mean of its divisors is an integer number (17813603500).

Almost surely, 2^69634995457 is an apocalyptic number.

It is an amenable number.

69634995457 is a deficient number, since it is larger than the sum of its proper divisors (1619418543).

69634995457 is a wasteful number, since it uses less digits than its factorization.

69634995457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619418542.

The product of its digits is 220449600, while the sum is 67.

The spelling of 69634995457 in words is "sixty-nine billion, six hundred thirty-four million, nine hundred ninety-five thousand, four hundred fifty-seven".