20755588624 has 15 divisors (see below), whose sum is σ = 40215069517. Its totient is φ = 10377506176.

The previous prime is 20755588571. The next prime is 20755588661. The reversal of 20755588624 is 42688555702.

The square root of 20755588624 is 144068.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10761987600 + 9993601024 = 103740^2 + 99968^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 558264 + ... + 594280.

Almost surely, 2^20755588624 is an apocalyptic number.

20755588624 is the 144068-th square number.

It is an amenable number.

20755588624 is a deficient number, since it is larger than the sum of its proper divisors (19459480893).

20755588624 is an frugal number, since it uses more digits than its factorization.

20755588624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72042 (or 36019 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 52.

The spelling of 20755588624 in words is "twenty billion, seven hundred fifty-five million, five hundred eighty-eight thousand, six hundred twenty-four".