15026778480 has 320 divisors, whose sum is σ = 54046540800. Its totient is φ = 3383009280.

The previous prime is 15026778479. The next prime is 15026778493. The reversal of 15026778480 is 8487762051.

It is a super-2 number, since 2×15026778480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53475940 + ... + 53476220.

It is an arithmetic number, because the mean of its divisors is an integer number (168895440).

Almost surely, 2^15026778480 is an apocalyptic number.

15026778480 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 15026778480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27023270400).

15026778480 is an abundant number, since it is smaller than the sum of its proper divisors (39019762320).

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

15026778480 is a wasteful number, since it uses less digits than its factorization.

15026778480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 15026778480 in words is "fifteen billion, twenty-six million, seven hundred seventy-eight thousand, four hundred eighty".