61460186278568 has 128 divisors (see below), whose sum is σ = 145077960867840. Its totient is φ = 23711425920000.

The previous prime is 61460186278559. The next prime is 61460186278657. The reversal of 61460186278568 is 86587268106416.

It is a super-2 number, since 2×61460186278568² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61460186278498 and 61460186278507.

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, 1385745593 + ... + 1385789943.

It is an arithmetic number, because the mean of its divisors is an integer number (1133421569280).

Almost surely, 2^{61460186278568} 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 61460186278568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72538980433920).

61460186278568 is an abundant number, since it is smaller than the sum of its proper divisors (83617774589272).

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

61460186278568 is a wasteful number, since it uses less digits than its factorization.

61460186278568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66319 (or 66315 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 68.

The spelling of 61460186278568 in words is "sixty-one trillion, four hundred sixty billion, one hundred eighty-six million, two hundred seventy-eight thousand, five hundred sixty-eight".