61311714240 has 112 divisors (see below), whose sum is σ = 222473958912. Its totient is φ = 14014104576.

The previous prime is 61311714239. The next prime is 61311714319. The reversal of 61311714240 is 4241711316.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 61311714198 and 61311714207.

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, 4555164 + ... + 4568603.

Almost surely, 2^61311714240 is an apocalyptic number.

61311714240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61311714240 is an abundant number, since it is smaller than the sum of its proper divisors (161162244672).

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

61311714240 is a wasteful number, since it uses less digits than its factorization.

61311714240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123794 (or 9123784 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 61311714240 in words is "sixty-one billion, three hundred eleven million, seven hundred fourteen thousand, two hundred forty".