20265604624 has 10 divisors (see below), whose sum is σ = 39264608990. Its totient is φ = 10132802304.

The previous prime is 20265604609. The next prime is 20265604643. The reversal of 20265604624 is 42640656202.

It can be written as a sum of positive squares in only one way, i.e., 15361123600 + 4904481024 = 123940^2 + 70032^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633300129 + ... + 633300160.

It is an arithmetic number, because the mean of its divisors is an integer number (3926460899).

Almost surely, 2^20265604624 is an apocalyptic number.

It is an amenable number.

20265604624 is a deficient number, since it is larger than the sum of its proper divisors (18999004366).

20265604624 is a wasteful number, since it uses less digits than its factorization.

20265604624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266600297 (or 1266600291 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 20265604624 in words is "twenty billion, two hundred sixty-five million, six hundred four thousand, six hundred twenty-four".