20402015676 has 96 divisors (see below), whose sum is σ = 55724433408. Its totient is φ = 5688983040.

The previous prime is 20402015581. The next prime is 20402015693. The reversal of 20402015676 is 67651020402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 838336 + ... + 862328.

It is an arithmetic number, because the mean of its divisors is an integer number (580462848).

Almost surely, 2^20402015676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20402015676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27862216704).

20402015676 is an abundant number, since it is smaller than the sum of its proper divisors (35322417732).

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

20402015676 is a wasteful number, since it uses less digits than its factorization.

20402015676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24251 (or 24249 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 20402015676 in words is "twenty billion, four hundred two million, fifteen thousand, six hundred seventy-six".