61313840361 has 24 divisors (see below), whose sum is σ = 91199646720. Its totient is φ = 39670084800.

The previous prime is 61313840339. The next prime is 61313840369. The reversal of 61313840361 is 16304831316.

61313840361 is a `hidden beast` number, since 61 + 3 + 138 + 403 + 61 = 666.

It is not a de Polignac number, because 61313840361 - 2⁷ = 61313840233 is a prime.

It is a super-2 number, since 2×61313840361² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61313840369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 364501 + ... + 505458.

It is an arithmetic number, because the mean of its divisors is an integer number (3799985280).

Almost surely, 2^61313840361 is an apocalyptic number.

It is an amenable number.

61313840361 is a deficient number, since it is larger than the sum of its proper divisors (29885806359).

61313840361 is a wasteful number, since it uses less digits than its factorization.

61313840361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870197 (or 870194 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 61313840361 in words is "sixty-one billion, three hundred thirteen million, eight hundred forty thousand, three hundred sixty-one".