157855438069 has 8 divisors (see below), whose sum is σ = 189901279040. Its totient is φ = 128183363136.

The previous prime is 157855437997. The next prime is 157855438099. The reversal of 157855438069 is 960834558751.

157855438069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157855438069 - 2⁷ = 157855437941 is a prime.

It is a super-2 number, since 2×157855438069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157855437998 and 157855438016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157855438099) 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 7 ways as a sum of consecutive naturals, for example, 593441364 + ... + 593441629.

It is an arithmetic number, because the mean of its divisors is an integer number (23737659880).

Almost surely, 2^157855438069 is an apocalyptic number.

157855438069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

157855438069 is a deficient number, since it is larger than the sum of its proper divisors (32045840971).

157855438069 is a wasteful number, since it uses less digits than its factorization.

157855438069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186883019.

The product of its (nonzero) digits is 36288000, while the sum is 61.

The spelling of 157855438069 in words is "one hundred fifty-seven billion, eight hundred fifty-five million, four hundred thirty-eight thousand, sixty-nine".