15685067660020 has 24 divisors (see below), whose sum is σ = 35933064094368. Its totient is φ = 5703660967200.

The previous prime is 15685067659993. The next prime is 15685067660029. The reversal of 15685067660020 is 2006676058651.

It is a self number, because there is not a number n which added to its sum of digits gives 15685067660020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15685067660029) 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, 35647880826 + ... + 35647881265.

It is an arithmetic number, because the mean of its divisors is an integer number (1497211003932).

Almost surely, 2^{15685067660020} is an apocalyptic number.

15685067660020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15685067660020 is an abundant number, since it is smaller than the sum of its proper divisors (20247996434348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15685067660020 is a wasteful number, since it uses less digits than its factorization.

15685067660020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71295762111 (or 71295762109 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 15685067660020 in words is "fifteen trillion, six hundred eighty-five billion, sixty-seven million, six hundred sixty thousand, twenty".