158121540715 has 16 divisors (see below), whose sum is σ = 191014403328. Its totient is φ = 125654017536.

The previous prime is 158121540677. The next prime is 158121540727. The reversal of 158121540715 is 517045121851.

158121540715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 158121540715 - 2¹¹ = 158121538667 is a prime.

It is a super-2 number, since 2×158121540715² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 354399 + ... + 664711.

It is an arithmetic number, because the mean of its divisors is an integer number (11938400208).

Almost surely, 2^158121540715 is an apocalyptic number.

158121540715 is a deficient number, since it is larger than the sum of its proper divisors (32892862613).

158121540715 is a wasteful number, since it uses less digits than its factorization.

158121540715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310998.

The product of its (nonzero) digits is 56000, while the sum is 40.

The spelling of 158121540715 in words is "one hundred fifty-eight billion, one hundred twenty-one million, five hundred forty thousand, seven hundred fifteen".