15255391061 has 24 divisors (see below), whose sum is σ = 16256349504. Its totient is φ = 14313438720.

The previous prime is 15255391013. The next prime is 15255391117. The reversal of 15255391061 is 16019355251.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-15255391061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15255391961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24176216 + ... + 24176846.

It is an arithmetic number, because the mean of its divisors is an integer number (677347896).

Almost surely, 2^15255391061 is an apocalyptic number.

It is an amenable number.

15255391061 is a deficient number, since it is larger than the sum of its proper divisors (1000958443).

15255391061 is a wasteful number, since it uses less digits than its factorization.

15255391061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 38.

The spelling of 15255391061 in words is "fifteen billion, two hundred fifty-five million, three hundred ninety-one thousand, sixty-one".