20801370374615 has 32 divisors (see below), whose sum is σ = 26750161213440. Its totient is φ = 15481253174400.

The previous prime is 20801370374611. The next prime is 20801370374621. The reversal of 20801370374615 is 51647307310802.

It is a happy number.

It is not a de Polignac number, because 20801370374615 - 2² = 20801370374611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20801370374615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20801370374611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560780 + ... + 6474350.

It is an arithmetic number, because the mean of its divisors is an integer number (835942537920).

Almost surely, 2^{20801370374615} is an apocalyptic number.

20801370374615 is a deficient number, since it is larger than the sum of its proper divisors (5948790838825).

20801370374615 is a wasteful number, since it uses less digits than its factorization.

20801370374615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5914263.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 20801370374615 in words is "twenty trillion, eight hundred one billion, three hundred seventy million, three hundred seventy-four thousand, six hundred fifteen".