61323650140 has 24 divisors (see below), whose sum is σ = 130890809952. Its totient is φ = 24127337280.

The previous prime is 61323650137. The next prime is 61323650147. The reversal of 61323650140 is 4105632316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61323650147) 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 7 ways as a sum of consecutive naturals, for example, 25131424 + ... + 25133863.

It is an arithmetic number, because the mean of its divisors is an integer number (5453783748).

Almost surely, 2^61323650140 is an apocalyptic number.

It is an amenable number.

61323650140 is an abundant number, since it is smaller than the sum of its proper divisors (69567159812).

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

61323650140 is a wasteful number, since it uses less digits than its factorization.

61323650140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50265357 (or 50265355 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 61323650140 in words is "sixty-one billion, three hundred twenty-three million, six hundred fifty thousand, one hundred forty".