61683671269 has 32 divisors (see below), whose sum is σ = 69729454080. Its totient is φ = 54080913600.

The previous prime is 61683671243. The next prime is 61683671311. The reversal of 61683671269 is 96217638616.

It is a cyclic number.

It is not a de Polignac number, because 61683671269 - 2¹⁵ = 61683638501 is a prime.

It is a super-2 number, since 2×61683671269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61683671869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16032304 + ... + 16036150.

It is an arithmetic number, because the mean of its divisors is an integer number (2179045440).

Almost surely, 2^61683671269 is an apocalyptic number.

It is an amenable number.

61683671269 is a deficient number, since it is larger than the sum of its proper divisors (8045782811).

61683671269 is a wasteful number, since it uses less digits than its factorization.

61683671269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321.

The product of its digits is 3919104, while the sum is 55.

The spelling of 61683671269 in words is "sixty-one billion, six hundred eighty-three million, six hundred seventy-one thousand, two hundred sixty-nine".