89504477961 has 16 divisors (see below), whose sum is σ = 123489878400. Its totient is φ = 57595545728.

The previous prime is 89504477957. The next prime is 89504477971. The reversal of 89504477961 is 16977440598.

It is a cyclic number.

It is not a de Polignac number, because 89504477961 - 2² = 89504477957 is a prime.

It is a super-2 number, since 2×89504477961² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89504477895 and 89504477904.

It is not an unprimeable number, because it can be changed into a prime (89504477971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161005 + ... + 452693.

It is an arithmetic number, because the mean of its divisors is an integer number (7718117400).

Almost surely, 2^89504477961 is an apocalyptic number.

It is an amenable number.

89504477961 is a deficient number, since it is larger than the sum of its proper divisors (33985400439).

89504477961 is a wasteful number, since it uses less digits than its factorization.

89504477961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295248.

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 89504477961 in words is "eighty-nine billion, five hundred four million, four hundred seventy-seven thousand, nine hundred sixty-one".