157638056069 has 16 divisors (see below), whose sum is σ = 172333347648. Its totient is φ = 143310701952.

The previous prime is 157638056041. The next prime is 157638056083. The reversal of 157638056069 is 960650836751.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 157638056069 - 2¹² = 157638051973 is a prime.

It is a super-2 number, since 2×157638056069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157638056089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4981154 + ... + 5012700.

It is an arithmetic number, because the mean of its divisors is an integer number (10770834228).

Almost surely, 2^157638056069 is an apocalyptic number.

It is an amenable number.

157638056069 is a deficient number, since it is larger than the sum of its proper divisors (14695291579).

157638056069 is a wasteful number, since it uses less digits than its factorization.

157638056069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37364.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 157638056069 in words is "one hundred fifty-seven billion, six hundred thirty-eight million, fifty-six thousand, sixty-nine".