20807244825087 has 16 divisors (see below), whose sum is σ = 31716978658560. Its totient is φ = 11885841374592.

The previous prime is 20807244825071. The next prime is 20807244825161. The reversal of 20807244825087 is 78052844270802.

It is not a de Polignac number, because 20807244825087 - 2⁴ = 20807244825071 is a prime.

It is a super-2 number, since 2×20807244825087² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20807244825067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167136762 + ... + 167261207.

It is an arithmetic number, because the mean of its divisors is an integer number (1982311166160).

Almost surely, 2^{20807244825087} is an apocalyptic number.

20807244825087 is a deficient number, since it is larger than the sum of its proper divisors (10909733833473).

20807244825087 is a wasteful number, since it uses less digits than its factorization.

20807244825087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334400942.

The product of its (nonzero) digits is 16056320, while the sum is 57.

The spelling of 20807244825087 in words is "twenty trillion, eight hundred seven billion, two hundred forty-four million, eight hundred twenty-five thousand, eighty-seven".