14515405990 has 32 divisors (see below), whose sum is σ = 26974508544. Its totient is φ = 5619634560.

The previous prime is 14515405981. The next prime is 14515406023. The reversal of 14515405990 is 9950451541.

It is a super-2 number, since 2×14515405990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32029 + ... + 173368.

It is an arithmetic number, because the mean of its divisors is an integer number (842953392).

Almost surely, 2^14515405990 is an apocalyptic number.

14515405990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14515405990 is a deficient number, since it is larger than the sum of its proper divisors (12459102554).

14515405990 is a wasteful number, since it uses less digits than its factorization.

14515405990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205632.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 14515405990 in words is "fourteen billion, five hundred fifteen million, four hundred five thousand, nine hundred ninety".