15072551990 has 32 divisors (see below), whose sum is σ = 29330385120. Its totient is φ = 5557330944.

The previous prime is 15072551987. The next prime is 15072552023. The reversal of 15072551990 is 9915527051.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1064987 + ... + 1079046.

It is an arithmetic number, because the mean of its divisors is an integer number (916574535).

Almost surely, 2^15072551990 is an apocalyptic number.

15072551990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15072551990 is a deficient number, since it is larger than the sum of its proper divisors (14257833130).

15072551990 is a wasteful number, since it uses less digits than its factorization.

15072551990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144096.

The product of its (nonzero) digits is 141750, while the sum is 44.

The spelling of 15072551990 in words is "fifteen billion, seventy-two million, five hundred fifty-one thousand, nine hundred ninety".