20135157365507 has 8 divisors (see below), whose sum is σ = 20679483788400. Its totient is φ = 19590837941664.

The previous prime is 20135157365503. The next prime is 20135157365513. The reversal of 20135157365507 is 70556375153102.

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

It is a cyclic number.

It is not a de Polignac number, because 20135157365507 - 2² = 20135157365503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135157365503) 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, 4366844 + ... + 7703222.

It is an arithmetic number, because the mean of its divisors is an integer number (2584935473550).

Almost surely, 2^{20135157365507} is an apocalyptic number.

20135157365507 is a deficient number, since it is larger than the sum of its proper divisors (544326422893).

20135157365507 is a wasteful number, since it uses less digits than its factorization.

20135157365507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499525.

The product of its (nonzero) digits is 3307500, while the sum is 50.

The spelling of 20135157365507 in words is "twenty trillion, one hundred thirty-five billion, one hundred fifty-seven million, three hundred sixty-five thousand, five hundred seven".