15321500061 has 16 divisors (see below), whose sum is σ = 23843794944. Its totient is φ = 8568862704.

The previous prime is 15321500021. The next prime is 15321500069. The reversal of 15321500061 is 16000512351.

It is not a de Polignac number, because 15321500061 - 2¹⁷ = 15321368989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15321500069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7760665 + ... + 7762638.

It is an arithmetic number, because the mean of its divisors is an integer number (1490237184).

Almost surely, 2^15321500061 is an apocalyptic number.

It is an amenable number.

15321500061 is a deficient number, since it is larger than the sum of its proper divisors (8522294883).

15321500061 is a wasteful number, since it uses less digits than its factorization.

15321500061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15523360.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 15321500061 in words is "fifteen billion, three hundred twenty-one million, five hundred thousand, sixty-one".