20277225464 has 16 divisors (see below), whose sum is σ = 38024742600. Its totient is φ = 10137294112.

The previous prime is 20277225413. The next prime is 20277225491. The reversal of 20277225464 is 46452277202.

It is a super-2 number, since 2×20277225464² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97874 + ... + 223905.

Almost surely, 2^20277225464 is an apocalyptic number.

It is an amenable number.

20277225464 is a deficient number, since it is larger than the sum of its proper divisors (17747517136).

20277225464 is a wasteful number, since it uses less digits than its factorization.

20277225464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329662 (or 329658 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 41.

The spelling of 20277225464 in words is "twenty billion, two hundred seventy-seven million, two hundred twenty-five thousand, four hundred sixty-four".