20757632577 has 8 divisors (see below), whose sum is σ = 30192920160. Its totient is φ = 12580383360.

The previous prime is 20757632573. The next prime is 20757632591. The reversal of 20757632577 is 77523675702.

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

It is not a de Polignac number, because 20757632577 - 2² = 20757632573 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20757632573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314509552 + ... + 314509617.

It is an arithmetic number, because the mean of its divisors is an integer number (3774115020).

Almost surely, 2^20757632577 is an apocalyptic number.

It is an amenable number.

20757632577 is a deficient number, since it is larger than the sum of its proper divisors (9435287583).

20757632577 is a wasteful number, since it uses less digits than its factorization.

20757632577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629019183.

The product of its (nonzero) digits is 4321800, while the sum is 51.

The spelling of 20757632577 in words is "twenty billion, seven hundred fifty-seven million, six hundred thirty-two thousand, five hundred seventy-seven".