89256490778 has 64 divisors (see below), whose sum is σ = 171437457408. Its totient is φ = 33901882560.

The previous prime is 89256490759. The next prime is 89256490811. The reversal of 89256490778 is 87709465298.

It is a happy number.

It is a super-2 number, since 2×89256490778² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 654251 + ... + 778817.

It is an arithmetic number, because the mean of its divisors is an integer number (2678710272).

Almost surely, 2^89256490778 is an apocalyptic number.

89256490778 is a deficient number, since it is larger than the sum of its proper divisors (82180966630).

89256490778 is a wasteful number, since it uses less digits than its factorization.

89256490778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124747.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 89256490778 in words is "eighty-nine billion, two hundred fifty-six million, four hundred ninety thousand, seven hundred seventy-eight".