61566324125 has 16 divisors (see below), whose sum is σ = 76910333760. Its totient is φ = 49204622800.

The previous prime is 61566324107. The next prime is 61566324137. The reversal of 61566324125 is 52142366516.

It is a happy number.

It is not a de Polignac number, because 61566324125 - 2¹⁰ = 61566323101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114299 + ... + 369048.

It is an arithmetic number, because the mean of its divisors is an integer number (4806895860).

Almost surely, 2^61566324125 is an apocalyptic number.

It is an amenable number.

61566324125 is a deficient number, since it is larger than the sum of its proper divisors (15344009635).

61566324125 is a wasteful number, since it uses less digits than its factorization.

61566324125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484381 (or 484371 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The spelling of 61566324125 in words is "sixty-one billion, five hundred sixty-six million, three hundred twenty-four thousand, one hundred twenty-five".