89960751981 has 16 divisors (see below), whose sum is σ = 133286524800. Its totient is φ = 59968733184.

The previous prime is 89960751931. The next prime is 89960751983. The reversal of 89960751981 is 18915706998.

89960751981 is a `hidden beast` number, since 8 + 9 + 9 + 607 + 5 + 19 + 8 + 1 = 666.

It is not a de Polignac number, because 89960751981 - 2⁶ = 89960751917 is a prime.

It is a super-2 number, since 2×89960751981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89960751983) 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 15 ways as a sum of consecutive naturals, for example, 196240 + ... + 467366.

It is an arithmetic number, because the mean of its divisors is an integer number (8330407800).

Almost surely, 2^89960751981 is an apocalyptic number.

It is an amenable number.

89960751981 is a deficient number, since it is larger than the sum of its proper divisors (43325772819).

89960751981 is a wasteful number, since it uses less digits than its factorization.

89960751981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283425 (or 283419 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 63.

The spelling of 89960751981 in words is "eighty-nine billion, nine hundred sixty million, seven hundred fifty-one thousand, nine hundred eighty-one".