20772254450 has 24 divisors (see below), whose sum is σ = 40669889520. Its totient is φ = 7871590800.

The previous prime is 20772254443. The next prime is 20772254509. The reversal of 20772254450 is 5445227702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10931816 + ... + 10933715.

It is an arithmetic number, because the mean of its divisors is an integer number (1694578730).

Almost surely, 2^20772254450 is an apocalyptic number.

20772254450 is a deficient number, since it is larger than the sum of its proper divisors (19897635070).

20772254450 is a wasteful number, since it uses less digits than its factorization.

20772254450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21865562 (or 21865557 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 38.

The spelling of 20772254450 in words is "twenty billion, seven hundred seventy-two million, two hundred fifty-four thousand, four hundred fifty".