15516122010 has 96 divisors (see below), whose sum is σ = 38665710720. Its totient is φ = 3984750336.

The previous prime is 15516121993. The next prime is 15516122051. The reversal of 15516122010 is 1022161551.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18493171 + ... + 18494009.

It is an arithmetic number, because the mean of its divisors is an integer number (402767820).

Almost surely, 2^15516122010 is an apocalyptic number.

15516122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15516122010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19332855360).

15516122010 is an abundant number, since it is smaller than the sum of its proper divisors (23149588710).

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

15516122010 is a wasteful number, since it uses less digits than its factorization.

15516122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 15516122010 its reverse (1022161551), we get a palindrome (16538283561).

The spelling of 15516122010 in words is "fifteen billion, five hundred sixteen million, one hundred twenty-two thousand, ten".