61140213624 has 64 divisors (see below), whose sum is σ = 177550064640. Its totient is φ = 17182258560.

The previous prime is 61140213577. The next prime is 61140213649. The reversal of 61140213624 is 42631204116.

It is a junction number, because it is equal to n+sod(n) for n = 61140213591 and 61140213600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2972784 + ... + 2993279.

It is an arithmetic number, because the mean of its divisors is an integer number (2774219760).

Almost surely, 2^61140213624 is an apocalyptic number.

It is an amenable number.

61140213624 is an abundant number, since it is smaller than the sum of its proper divisors (116409851016).

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

61140213624 is a wasteful number, since it uses less digits than its factorization.

61140213624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966140 (or 5966136 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 61140213624 in words is "sixty-one billion, one hundred forty million, two hundred thirteen thousand, six hundred twenty-four".