15673649472 has 336 divisors, whose sum is σ = 50334428160. Its totient is φ = 4780339200.

The previous prime is 15673649447. The next prime is 15673649473. The reversal of 15673649472 is 27494637651.

15673649472 is a `hidden beast` number, since 1 + 56 + 7 + 36 + 494 + 72 = 666.

It is a super-2 number, since 2×15673649472² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (7620480) is a multiple of the sum of its prime divisors (490).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15673649473) 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, 55777972 + ... + 55778252.

Almost surely, 2^15673649472 is an apocalyptic number.

15673649472 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 15673649472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25167214080).

15673649472 is an abundant number, since it is smaller than the sum of its proper divisors (34660778688).

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

15673649472 is a wasteful number, since it uses less digits than its factorization.

15673649472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 490 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 15673649472 in words is "fifteen billion, six hundred seventy-three million, six hundred forty-nine thousand, four hundred seventy-two".