61360757904 has 80 divisors (see below), whose sum is σ = 161484287360. Its totient is φ = 20072033280.

The previous prime is 61360757893. The next prime is 61360757911. The reversal of 61360757904 is 40975706316.

It is a happy number.

It is a super-2 number, since 2×61360757904² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 1261524 + ... + 1309260.

It is an arithmetic number, because the mean of its divisors is an integer number (2018553592).

Almost surely, 2^61360757904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61360757904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80742143680).

61360757904 is an abundant number, since it is smaller than the sum of its proper divisors (100123529456).

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

61360757904 is a wasteful number, since it uses less digits than its factorization.

61360757904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48248 (or 48242 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 61360757904 in words is "sixty-one billion, three hundred sixty million, seven hundred fifty-seven thousand, nine hundred four".