20572761652 has 12 divisors (see below), whose sum is σ = 36003337216. Its totient is φ = 10286093880.

The previous prime is 20572761637. The next prime is 20572761653. The reversal of 20572761652 is 25616727502.

It is a junction number, because it is equal to n+sod(n) for n = 20572761599 and 20572761608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20572761653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243277 + ... + 316747.

Almost surely, 2^20572761652 is an apocalyptic number.

It is an amenable number.

20572761652 is a deficient number, since it is larger than the sum of its proper divisors (15430575564).

20572761652 is a wasteful number, since it uses less digits than its factorization.

20572761652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143478 (or 143476 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 20572761652 in words is "twenty billion, five hundred seventy-two million, seven hundred sixty-one thousand, six hundred fifty-two".