15621270490 has 32 divisors (see below), whose sum is σ = 32172981120. Its totient is φ = 5349564864.

The previous prime is 15621270487. The next prime is 15621270491. The reversal of 15621270490 is 9407212651.

It is not an unprimeable number, because it can be changed into a prime (15621270491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71100 + ... + 190519.

It is an arithmetic number, because the mean of its divisors is an integer number (1005405660).

Almost surely, 2^15621270490 is an apocalyptic number.

15621270490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15621270490 is an abundant number, since it is smaller than the sum of its proper divisors (16551710630).

15621270490 is a wasteful number, since it uses less digits than its factorization.

15621270490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262486.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 15621270490 in words is "fifteen billion, six hundred twenty-one million, two hundred seventy thousand, four hundred ninety".