20274901264 has 20 divisors (see below), whose sum is σ = 39285348300. Its totient is φ = 10136746880.

The previous prime is 20274901259. The next prime is 20274901279. The reversal of 20274901264 is 46210947202.

It can be written as a sum of positive squares in 2 ways, for example, as 3685461264 + 16589440000 = 60708^2 + 128800^2 .

It is a super-2 number, since 2×20274901264² (a number of 21 digits) contains 22 as substring.

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, 255474 + ... + 325294.

It is an arithmetic number, because the mean of its divisors is an integer number (1964267415).

Almost surely, 2^20274901264 is an apocalyptic number.

It is an amenable number.

20274901264 is a deficient number, since it is larger than the sum of its proper divisors (19010447036).

20274901264 is a wasteful number, since it uses less digits than its factorization.

20274901264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87978 (or 87972 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20274901264 in words is "twenty billion, two hundred seventy-four million, nine hundred one thousand, two hundred sixty-four".