61311325240512 has 42 divisors (see below), whose sum is σ = 175737843703188. Its totient is φ = 20437108413312.

The previous prime is 61311325240453. The next prime is 61311325240531. The reversal of 61311325240512 is 21504252311316.

61311325240512 is a `hidden beast` number, since 6 + 1 + 3 + 1 + 132 + 5 + 2 + 4 + 0 + 512 = 666.

It is a super-3 number, since 3×61311325240512³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53221635918 + ... + 53221637069.

Almost surely, 2^{61311325240512} is an apocalyptic number.

It is an amenable number.

61311325240512 is an abundant number, since it is smaller than the sum of its proper divisors (114426518462676).

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

61311325240512 is a wasteful number, since it uses less digits than its factorization.

61311325240512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106443273005 (or 106443272992 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 61311325240512 its reverse (21504252311316), we get a palindrome (82815577551828).

The spelling of 61311325240512 in words is "sixty-one trillion, three hundred eleven billion, three hundred twenty-five million, two hundred forty thousand, five hundred twelve".