15561716060 has 24 divisors (see below), whose sum is σ = 35650477296. Its totient is φ = 5658805760.

The previous prime is 15561716057. The next prime is 15561716069. The reversal of 15561716060 is 6061716551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15561716069) 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, 35367317 + ... + 35367756.

It is an arithmetic number, because the mean of its divisors is an integer number (1485436554).

Almost surely, 2^15561716060 is an apocalyptic number.

15561716060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15561716060 is an abundant number, since it is smaller than the sum of its proper divisors (20088761236).

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

15561716060 is a wasteful number, since it uses less digits than its factorization.

15561716060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70735093 (or 70735091 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 15561716060 in words is "fifteen billion, five hundred sixty-one million, seven hundred sixteen thousand, sixty".