15391116426240 has 1408 divisors, whose sum is σ = 56927482675200. Its totient is φ = 3991090102272.

The previous prime is 15391116426227. The next prime is 15391116426269. The reversal of 15391116426240 is 4262461119351.

15391116426240 is a `hidden beast` number, since 1 + 5 + 3 + 9 + 1 + 1 + 16 + 4 + 2 + 624 + 0 = 666.

15391116426240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 112343915452 + ... + 112343915588.

Almost surely, 2^{15391116426240} is an apocalyptic number.

15391116426240 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 15391116426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28463741337600).

15391116426240 is an abundant number, since it is smaller than the sum of its proper divisors (41536366248960).

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

15391116426240 is an equidigital number, since it uses as much as digits as its factorization.

15391116426240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 15391116426240 in words is "fifteen trillion, three hundred ninety-one billion, one hundred sixteen million, four hundred twenty-six thousand, two hundred forty".