15970631040 has 384 divisors, whose sum is σ = 67877409600. Its totient is φ = 3369517056.

The previous prime is 15970631029. The next prime is 15970631041. The reversal of 15970631040 is 4013607951.

15970631040 is a `hidden beast` number, since 1 + 597 + 0 + 63 + 1 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×15970631040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15970630986 and 15970631004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15970631041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 508926 + ... + 539394.

Almost surely, 2^15970631040 is an apocalyptic number.

15970631040 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 15970631040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33938704800).

15970631040 is an abundant number, since it is smaller than the sum of its proper divisors (51906778560).

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

15970631040 is a wasteful number, since it uses less digits than its factorization.

15970631040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30514 (or 30499 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 15970631040 in words is "fifteen billion, nine hundred seventy million, six hundred thirty-one thousand, forty".