157858018636 has 6 divisors (see below), whose sum is σ = 276251532620. Its totient is φ = 78929009316.

The previous prime is 157858018613. The next prime is 157858018709. The reversal of 157858018636 is 636810858751.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19732252326 + ... + 19732252333.

Almost surely, 2^157858018636 is an apocalyptic number.

It is an amenable number.

157858018636 is a deficient number, since it is larger than the sum of its proper divisors (118393513984).

157858018636 is a wasteful number, since it uses less digits than its factorization.

157858018636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39464504663 (or 39464504661 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 157858018636 in words is "one hundred fifty-seven billion, eight hundred fifty-eight million, eighteen thousand, six hundred thirty-six".