20270073757521 has 8 divisors (see below), whose sum is σ = 30887731440064. Its totient is φ = 11582899290000.

The previous prime is 20270073757517. The next prime is 20270073757537. The reversal of 20270073757521 is 12575737007202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20270073757521 - 2² = 20270073757517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20270073757511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482620803730 + ... + 482620803771.

It is an arithmetic number, because the mean of its divisors is an integer number (3860966430008).

Almost surely, 2^{20270073757521} is an apocalyptic number.

20270073757521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20270073757521 is a deficient number, since it is larger than the sum of its proper divisors (10617657682543).

20270073757521 is an equidigital number, since it uses as much as digits as its factorization.

20270073757521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965241607511.

The product of its (nonzero) digits is 1440600, while the sum is 48.

The spelling of 20270073757521 in words is "twenty trillion, two hundred seventy billion, seventy-three million, seven hundred fifty-seven thousand, five hundred twenty-one".