20270073757520 has 40 divisors (see below), whose sum is σ = 48017127562056. Its totient is φ = 7955047812608.

The previous prime is 20270073757517. The next prime is 20270073757537. The reversal of 20270073757520 is 2575737007202.

It can be written as a sum of positive squares in 4 ways, for example, as 2404844171536 + 17865229585984 = 1550756^2 + 4226728^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 2390334647 + ... + 2390343126.

Almost surely, 2^{20270073757520} is an apocalyptic number.

20270073757520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20270073757520 is an abundant number, since it is smaller than the sum of its proper divisors (27747053804536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20270073757520 is a wasteful number, since it uses less digits than its factorization.

20270073757520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780677839 (or 4780677833 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 47.

The spelling of 20270073757520 in words is "twenty trillion, two hundred seventy billion, seventy-three million, seven hundred fifty-seven thousand, five hundred twenty".