15430903640 has 16 divisors (see below), whose sum is σ = 34719533280. Its totient is φ = 6172361440.

The previous prime is 15430903627. The next prime is 15430903643. The reversal of 15430903640 is 4630903451.

It is a happy number.

It is a super-2 number, since 2×15430903640² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15430903640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15430903643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192886256 + ... + 192886335.

It is an arithmetic number, because the mean of its divisors is an integer number (2169970830).

Almost surely, 2^15430903640 is an apocalyptic number.

15430903640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15430903640 is an abundant number, since it is smaller than the sum of its proper divisors (19288629640).

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

15430903640 is a wasteful number, since it uses less digits than its factorization.

15430903640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385772602 (or 385772598 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 15430903640 in words is "fifteen billion, four hundred thirty million, nine hundred three thousand, six hundred forty".