61162884081 has 16 divisors (see below), whose sum is σ = 97581809920. Its totient is φ = 37638697680.

The previous prime is 61162884047. The next prime is 61162884103. The reversal of 61162884081 is 18048826116.

61162884081 is a `hidden beast` number, since 6 + 1 + 162 + 88 + 408 + 1 = 666.

It is not a de Polignac number, because 61162884081 - 2⁶ = 61162884017 is a prime.

It is a super-2 number, since 2×61162884081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61162884031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87126265 + ... + 87126966.

It is an arithmetic number, because the mean of its divisors is an integer number (6098863120).

Almost surely, 2^61162884081 is an apocalyptic number.

It is an amenable number.

61162884081 is a deficient number, since it is larger than the sum of its proper divisors (36418925839).

61162884081 is a wasteful number, since it uses less digits than its factorization.

61162884081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174253253 (or 174253247 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 61162884081 in words is "sixty-one billion, one hundred sixty-two million, eight hundred eighty-four thousand, eighty-one".