61554740347760 has 160 divisors (see below), whose sum is σ = 165314425003200. Its totient is φ = 21066176839680.

The previous prime is 61554740347717. The next prime is 61554740347861. The reversal of 61554740347760 is 6774304745516.

It is a self number, because there is not a number n which added to its sum of digits gives 61554740347760.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712486646 + ... + 712573034.

It is an arithmetic number, because the mean of its divisors is an integer number (1033215156270).

Almost surely, 2^{61554740347760} is an apocalyptic number.

It is an amenable number.

61554740347760 is an abundant number, since it is smaller than the sum of its proper divisors (103759684655440).

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

61554740347760 is a wasteful number, since it uses less digits than its factorization.

61554740347760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134059 (or 134053 counting only the distinct ones).

The product of its (nonzero) digits is 59270400, while the sum is 59.

The spelling of 61554740347760 in words is "sixty-one trillion, five hundred fifty-four billion, seven hundred forty million, three hundred forty-seven thousand, seven hundred sixty".