15505005061 has 32 divisors (see below), whose sum is σ = 19420056320. Its totient is φ = 12052924416.

The previous prime is 15505005041. The next prime is 15505005083. The reversal of 15505005061 is 16050050551.

It is a de Polignac number, because none of the positive numbers 2^k-15505005061 is a prime.

It is a super-2 number, since 2×15505005061² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15505005041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1220635 + ... + 1233271.

It is an arithmetic number, because the mean of its divisors is an integer number (606876760).

Almost surely, 2^15505005061 is an apocalyptic number.

It is an amenable number.

15505005061 is a deficient number, since it is larger than the sum of its proper divisors (3915051259).

15505005061 is a wasteful number, since it uses less digits than its factorization.

15505005061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 15505005061 in words is "fifteen billion, five hundred five million, five thousand, sixty-one".