15015455040 has 112 divisors (see below), whose sum is σ = 47717854272. Its totient is φ = 4000444416.

The previous prime is 15015454981. The next prime is 15015455041. The reversal of 15015455040 is 4055451051.

It is a super-2 number, since 2×15015455040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15015454989 and 15015455007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15015455041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1132932 + ... + 1146108.

Almost surely, 2^15015455040 is an apocalyptic number.

15015455040 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 15015455040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23858927136).

15015455040 is an abundant number, since it is smaller than the sum of its proper divisors (32702399232).

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

15015455040 is a wasteful number, since it uses less digits than its factorization.

15015455040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14384 (or 14374 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 15015455040 in words is "fifteen billion, fifteen million, four hundred fifty-five thousand, forty".