61860485988 has 288 divisors, whose sum is σ = 194847744000. Its totient is φ = 16148574720.

The previous prime is 61860485971. The next prime is 61860486031. The reversal of 61860485988 is 88958406816.

61860485988 is a `hidden beast` number, since 6 + 1 + 8 + 60 + 485 + 98 + 8 = 666.

61860485988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61860485988² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 60706543 + ... + 60707561.

Almost surely, 2^61860485988 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 61860485988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97423872000).

61860485988 is an abundant number, since it is smaller than the sum of its proper divisors (132987258012).

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

61860485988 is a wasteful number, since it uses less digits than its factorization.

61860485988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 63.

The spelling of 61860485988 in words is "sixty-one billion, eight hundred sixty million, four hundred eighty-five thousand, nine hundred eighty-eight".