61249431327 has 16 divisors (see below), whose sum is σ = 93534938112. Its totient is φ = 34923748320.

The previous prime is 61249431307. The next prime is 61249431407. The reversal of 61249431327 is 72313494216.

It is a happy number.

It is not a de Polignac number, because 61249431327 - 2¹⁸ = 61249169183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61249431307) 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, 3153703 + ... + 3173064.

It is an arithmetic number, because the mean of its divisors is an integer number (5845933632).

Almost surely, 2^61249431327 is an apocalyptic number.

61249431327 is a deficient number, since it is larger than the sum of its proper divisors (32285506785).

61249431327 is a wasteful number, since it uses less digits than its factorization.

61249431327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327238.

The product of its digits is 217728, while the sum is 42.

The spelling of 61249431327 in words is "sixty-one billion, two hundred forty-nine million, four hundred thirty-one thousand, three hundred twenty-seven".