157078217109 has 16 divisors (see below), whose sum is σ = 228602824704. Its totient is φ = 95146662000.

The previous prime is 157078217071. The next prime is 157078217119. The reversal of 157078217109 is 901712870751.

It is not a de Polignac number, because 157078217109 - 2³³ = 148488282517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157078217119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245367 + ... + 1365684.

It is an arithmetic number, because the mean of its divisors is an integer number (14287676544).

Almost surely, 2^157078217109 is an apocalyptic number.

It is an amenable number.

157078217109 is a deficient number, since it is larger than the sum of its proper divisors (71524607595).

157078217109 is a wasteful number, since it uses less digits than its factorization.

157078217109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612888.

The product of its (nonzero) digits is 246960, while the sum is 48.

The spelling of 157078217109 in words is "one hundred fifty-seven billion, seventy-eight million, two hundred seventeen thousand, one hundred nine".