72020853512 has 8 divisors (see below), whose sum is σ = 135039100350. Its totient is φ = 36010426752.

The previous prime is 72020853493. The next prime is 72020853521. The reversal of 72020853512 is 21535802027.

It can be written as a sum of positive squares in only one way, i.e., 68416772356 + 3604081156 = 261566^2 + 60034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4501303337 + ... + 4501303352.

Almost surely, 2^72020853512 is an apocalyptic number.

It is an amenable number.

72020853512 is a deficient number, since it is larger than the sum of its proper divisors (63018246838).

72020853512 is a wasteful number, since it uses less digits than its factorization.

72020853512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9002606695 (or 9002606691 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 72020853512 in words is "seventy-two billion, twenty million, eight hundred fifty-three thousand, five hundred twelve".