61368885760 has 240 divisors, whose sum is σ = 184335998616. Its totient is φ = 19421724672.

The previous prime is 61368885757. The next prime is 61368885863. The reversal of 61368885760 is 6758886316.

It can be written as a sum of positive squares in 4 ways, for example, as 30409779456 + 30959106304 = 174384^2 + 175952^2 .

It is a super-2 number, since 2×61368885760² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61368885695 and 61368885704.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1611904 + ... + 1649536.

Almost surely, 2^61368885760 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 61368885760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92167999308).

61368885760 is an abundant number, since it is smaller than the sum of its proper divisors (122967112856).

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

61368885760 is a wasteful number, since it uses less digits than its factorization.

61368885760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37683 (or 37660 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 61368885760 in words is "sixty-one billion, three hundred sixty-eight million, eight hundred eighty-five thousand, seven hundred sixty".