157278075889 has 27 divisors (see below), whose sum is σ = 178786163577. Its totient is φ = 138248833800.

The previous prime is 157278075887. The next prime is 157278075907. The reversal of 157278075889 is 988570872751.

The square root of 157278075889 is 396583.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 157278075889 - 2¹ = 157278075887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157278075881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 135234222 + ... + 135235384.

Almost surely, 2^157278075889 is an apocalyptic number.

157278075889 is the 396583-rd square number.

157278075889 is the 198292-nd centered octagonal number.

It is an amenable number.

157278075889 is a deficient number, since it is larger than the sum of its proper divisors (21508087688).

157278075889 is an frugal number, since it uses more digits than its factorization.

157278075889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 79027200, while the sum is 67.

The spelling of 157278075889 in words is "one hundred fifty-seven billion, two hundred seventy-eight million, seventy-five thousand, eight hundred eighty-nine".