61034662081 has 4 divisors (see below), whose sum is σ = 61500575664. Its totient is φ = 60568748500.

The previous prime is 61034662033. The next prime is 61034662093. The reversal of 61034662081 is 18026643016.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61034662081 - 2³¹ = 58887178433 is a prime.

It is a super-2 number, since 2×61034662081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61034662081.

It is not an unprimeable number, because it can be changed into a prime (61034662181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232956595 + ... + 232956856.

It is an arithmetic number, because the mean of its divisors is an integer number (15375143916).

Almost surely, 2^61034662081 is an apocalyptic number.

It is an amenable number.

61034662081 is a deficient number, since it is larger than the sum of its proper divisors (465913583).

61034662081 is a wasteful number, since it uses less digits than its factorization.

61034662081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465913582.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 61034662081 in words is "sixty-one billion, thirty-four million, six hundred sixty-two thousand, eighty-one".