20012520544 has 24 divisors (see below), whose sum is σ = 39424891968. Its totient is φ = 9999849600.

The previous prime is 20012520533. The next prime is 20012520551. The reversal of 20012520544 is 44502521002.

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, 149407 + ... + 249694.

It is an arithmetic number, because the mean of its divisors is an integer number (1642703832).

Almost surely, 2^20012520544 is an apocalyptic number.

It is an amenable number.

20012520544 is a deficient number, since it is larger than the sum of its proper divisors (19412371424).

20012520544 is a wasteful number, since it uses less digits than its factorization.

20012520544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400678 (or 400670 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The spelling of 20012520544 in words is "twenty billion, twelve million, five hundred twenty thousand, five hundred forty-four".