15541322052 has 24 divisors (see below), whose sum is σ = 36699991776. Its totient is φ = 5118025408.

The previous prime is 15541322011. The next prime is 15541322057. The reversal of 15541322052 is 25022314551.

It is a super-2 number, since 2×15541322052² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15541322057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7800873 + ... + 7802864.

It is an arithmetic number, because the mean of its divisors is an integer number (1529166324).

Almost surely, 2^15541322052 is an apocalyptic number.

15541322052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15541322052 is an abundant number, since it is smaller than the sum of its proper divisors (21158669724).

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

15541322052 is a wasteful number, since it uses less digits than its factorization.

15541322052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15603827 (or 15603825 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 15541322052 in words is "fifteen billion, five hundred forty-one million, three hundred twenty-two thousand, fifty-two".