61725638814 has 32 divisors (see below), whose sum is σ = 141095160576. Its totient is φ = 17634898560.

The previous prime is 61725638813. The next prime is 61725638837. The reversal of 61725638814 is 41883652716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61725638813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040329 + ... + 1098059.

It is an arithmetic number, because the mean of its divisors is an integer number (4409223768).

Almost surely, 2^61725638814 is an apocalyptic number.

61725638814 is an abundant number, since it is smaller than the sum of its proper divisors (79369521762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61725638814 is a wasteful number, since it uses less digits than its factorization.

61725638814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83200.

The product of its digits is 1935360, while the sum is 51.

The spelling of 61725638814 in words is "sixty-one billion, seven hundred twenty-five million, six hundred thirty-eight thousand, eight hundred fourteen".