15561506010 has 32 divisors (see below), whose sum is σ = 37400942592. Its totient is φ = 4143809600.

The previous prime is 15561506003. The next prime is 15561506021. The reversal of 15561506010 is 1060516551.

It is a super-2 number, since 2×15561506010² (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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348954 + ... + 391013.

It is an arithmetic number, because the mean of its divisors is an integer number (1168779456).

Almost surely, 2^15561506010 is an apocalyptic number.

15561506010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15561506010 is an abundant number, since it is smaller than the sum of its proper divisors (21839436582).

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

15561506010 is a wasteful number, since it uses less digits than its factorization.

15561506010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740678.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 15561506010 in words is "fifteen billion, five hundred sixty-one million, five hundred six thousand, ten".