15974639949312 has 600 divisors, whose sum is σ = 54896911843752. Its totient is φ = 4585973760000.

The previous prime is 15974639949287. The next prime is 15974639949319. The reversal of 15974639949312 is 21394993647951.

It is a happy number.

15974639949312 is a `hidden beast` number, since 1 + 5 + 9 + 7 + 46 + 3 + 99 + 493 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15974639949319) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 164636812 + ... + 164733812.

Almost surely, 2^{15974639949312} is an apocalyptic number.

15974639949312 is a gapful number since it is divisible by the number (12) 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 15974639949312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27448455921876).

15974639949312 is an abundant number, since it is smaller than the sum of its proper divisors (38922271894440).

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

15974639949312 is an equidigital number, since it uses as much as digits as its factorization.

15974639949312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97080 (or 97036 counting only the distinct ones).

The product of its digits is 396809280, while the sum is 72.

The spelling of 15974639949312 in words is "fifteen trillion, nine hundred seventy-four billion, six hundred thirty-nine million, nine hundred forty-nine thousand, three hundred twelve".