89993656761 has 32 divisors (see below), whose sum is σ = 121604290560. Its totient is φ = 59196386304.

The previous prime is 89993656757. The next prime is 89993656763. The reversal of 89993656761 is 16765639998.

It is not a de Polignac number, because 89993656761 - 2² = 89993656757 is a prime.

It is a super-2 number, since 2×89993656761² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89993656763) 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, 50472276 + ... + 50474058.

It is an arithmetic number, because the mean of its divisors is an integer number (3800134080).

Almost surely, 2^89993656761 is an apocalyptic number.

It is an amenable number.

89993656761 is a deficient number, since it is larger than the sum of its proper divisors (31610633799).

89993656761 is a wasteful number, since it uses less digits than its factorization.

89993656761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645.

The product of its digits is 132269760, while the sum is 69.

The spelling of 89993656761 in words is "eighty-nine billion, nine hundred ninety-three million, six hundred fifty-six thousand, seven hundred sixty-one".