15479453808 has 480 divisors, whose sum is σ = 56204069376. Its totient is φ = 4015401984.

The previous prime is 15479453791. The next prime is 15479453827. The reversal of 15479453808 is 80835497451.

15479453808 is a `hidden beast` number, since 1 + 547 + 94 + 5 + 3 + 8 + 0 + 8 = 666.

15479453808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15479453808² (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).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23704810 + ... + 23705462.

Almost surely, 2^15479453808 is an apocalyptic number.

15479453808 is a gapful number since it is divisible by the number (18) 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 15479453808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28102034688).

15479453808 is an abundant number, since it is smaller than the sum of its proper divisors (40724615568).

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

15479453808 is a wasteful number, since it uses less digits than its factorization.

15479453808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 15479453808 in words is "fifteen billion, four hundred seventy-nine million, four hundred fifty-three thousand, eight hundred eight".