61140769624 has 16 divisors (see below), whose sum is σ = 125060665320. Its totient is φ = 27791258880.

The previous prime is 61140769601. The next prime is 61140769759. The reversal of 61140769624 is 42696704116.

It is a super-2 number, since 2×61140769624² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 347390649 + ... + 347390824.

Almost surely, 2^61140769624 is an apocalyptic number.

It is an amenable number.

61140769624 is an abundant number, since it is smaller than the sum of its proper divisors (63919895696).

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

61140769624 is a wasteful number, since it uses less digits than its factorization.

61140769624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694781490 (or 694781486 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 61140769624 in words is "sixty-one billion, one hundred forty million, seven hundred sixty-nine thousand, six hundred twenty-four".