157278642434 has 16 divisors (see below), whose sum is σ = 248455783680. Its totient is φ = 74464084080.

The previous prime is 157278642419. The next prime is 157278642497. The reversal of 157278642434 is 434246872751.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930002 + ... + 1086029.

It is an arithmetic number, because the mean of its divisors is an integer number (15528486480).

Almost surely, 2^157278642434 is an apocalyptic number.

157278642434 is a deficient number, since it is larger than the sum of its proper divisors (91177141246).

157278642434 is a wasteful number, since it uses less digits than its factorization.

157278642434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018105.

The product of its digits is 9031680, while the sum is 53.

The spelling of 157278642434 in words is "one hundred fifty-seven billion, two hundred seventy-eight million, six hundred forty-two thousand, four hundred thirty-four".