61523234985 has 16 divisors (see below), whose sum is σ = 99623168064. Its totient is φ = 32417061312.

The previous prime is 61523234977. The next prime is 61523234989. The reversal of 61523234985 is 58943232516.

It is not a de Polignac number, because 61523234985 - 2³ = 61523234977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61523234989) 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, 24706882 + ... + 24709371.

It is an arithmetic number, because the mean of its divisors is an integer number (6226448004).

Almost surely, 2^61523234985 is an apocalyptic number.

It is an amenable number.

61523234985 is a deficient number, since it is larger than the sum of its proper divisors (38099933079).

61523234985 is a wasteful number, since it uses less digits than its factorization.

61523234985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49416344.

The product of its digits is 1555200, while the sum is 48.

The spelling of 61523234985 in words is "sixty-one billion, five hundred twenty-three million, two hundred thirty-four thousand, nine hundred eighty-five".