20507542495 has 8 divisors (see below), whose sum is σ = 26846237520. Its totient is φ = 14914576320.

The previous prime is 20507542469. The next prime is 20507542543. The reversal of 20507542495 is 59424570502.

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

It is not a de Polignac number, because 20507542495 - 2²¹ = 20505445343 is a prime.

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, 186432150 + ... + 186432259.

It is an arithmetic number, because the mean of its divisors is an integer number (3355779690).

Almost surely, 2^20507542495 is an apocalyptic number.

20507542495 is a deficient number, since it is larger than the sum of its proper divisors (6338695025).

20507542495 is a wasteful number, since it uses less digits than its factorization.

20507542495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372864425.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 20507542495 in words is "twenty billion, five hundred seven million, five hundred forty-two thousand, four hundred ninety-five".