20713311752572 has 24 divisors (see below), whose sum is σ = 37360463217840. Its totient is φ = 10040885930880.

The previous prime is 20713311752543. The next prime is 20713311752633. The reversal of 20713311752572 is 27525711331702.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248988322 + ... + 249071497.

It is an arithmetic number, because the mean of its divisors is an integer number (1556685967410).

Almost surely, 2^{20713311752572} is an apocalyptic number.

It is an amenable number.

20713311752572 is a deficient number, since it is larger than the sum of its proper divisors (16647151465268).

20713311752572 is a wasteful number, since it uses less digits than its factorization.

20713311752572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498060141 (or 498060139 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 20713311752572 in words is "twenty trillion, seven hundred thirteen billion, three hundred eleven million, seven hundred fifty-two thousand, five hundred seventy-two".