15693896621040 has 160 divisors (see below), whose sum is σ = 53083591646976. Its totient is φ = 3803886612480.

The previous prime is 15693896621033. The next prime is 15693896621077. The reversal of 15693896621040 is 4012669839651.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13998744 + ... + 15078216.

Almost surely, 2^{15693896621040} is an apocalyptic number.

15693896621040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15693896621040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26541795823488).

15693896621040 is an abundant number, since it is smaller than the sum of its proper divisors (37389695025936).

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

15693896621040 is a wasteful number, since it uses less digits than its factorization.

15693896621040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085007 (or 1085001 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 15693896621040 in words is "fifteen trillion, six hundred ninety-three billion, eight hundred ninety-six million, six hundred twenty-one thousand, forty".