20269865740 has 48 divisors (see below), whose sum is σ = 43083399744. Its totient is φ = 8009888000.

The previous prime is 20269865717. The next prime is 20269865783. The reversal of 20269865740 is 4756896202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920337 + ... + 942103.

It is an arithmetic number, because the mean of its divisors is an integer number (897570828).

Almost surely, 2^20269865740 is an apocalyptic number.

20269865740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20269865740 is an abundant number, since it is smaller than the sum of its proper divisors (22813534004).

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

20269865740 is a wasteful number, since it uses less digits than its factorization.

20269865740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22338 (or 22336 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 20269865740 in words is "twenty billion, two hundred sixty-nine million, eight hundred sixty-five thousand, seven hundred forty".