20486838156 has 24 divisors (see below), whose sum is σ = 47906328624. Its totient is φ = 6814130880.

The previous prime is 20486838133. The next prime is 20486838161. The reversal of 20486838156 is 65183868402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20486838099 and 20486838108.

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, 1846135 + ... + 1857198.

It is an arithmetic number, because the mean of its divisors is an integer number (1996097026).

Almost surely, 2^20486838156 is an apocalyptic number.

It is an amenable number.

20486838156 is an abundant number, since it is smaller than the sum of its proper divisors (27419490468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20486838156 is a wasteful number, since it uses less digits than its factorization.

20486838156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703801 (or 3703799 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 20486838156 in words is "twenty billion, four hundred eighty-six million, eight hundred thirty-eight thousand, one hundred fifty-six".