20014642156 has 6 divisors (see below), whose sum is σ = 35025623780. Its totient is φ = 10007321076.

The previous prime is 20014642139. The next prime is 20014642177. The reversal of 20014642156 is 65124641002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501830266 + ... + 2501830273.

Almost surely, 2^20014642156 is an apocalyptic number.

It is an amenable number.

20014642156 is a deficient number, since it is larger than the sum of its proper divisors (15010981624).

20014642156 is a wasteful number, since it uses less digits than its factorization.

20014642156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003660543 (or 5003660541 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 20014642156 in words is "twenty billion, fourteen million, six hundred forty-two thousand, one hundred fifty-six".