61681752260 has 24 divisors (see below), whose sum is σ = 129536620416. Its totient is φ = 24671759840.

The previous prime is 61681752259. The next prime is 61681752289. The reversal of 61681752260 is 6225718616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749765 + ... + 827955.

It is an arithmetic number, because the mean of its divisors is an integer number (5397359184).

Almost surely, 2^61681752260 is an apocalyptic number.

It is an amenable number.

61681752260 is an abundant number, since it is smaller than the sum of its proper divisors (67854868156).

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

61681752260 is a wasteful number, since it uses less digits than its factorization.

61681752260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117643 (or 117641 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 61681752260 in words is "sixty-one billion, six hundred eighty-one million, seven hundred fifty-two thousand, two hundred sixty".