64891122048 has 48 divisors (see below), whose sum is σ = 186730966500. Its totient is φ = 21630373632.

The previous prime is 64891122017. The next prime is 64891122073. The reversal of 64891122048 is 84022119846.

64891122048 is a `hidden beast` number, since 6 + 489 + 1 + 122 + 0 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 64891121994 and 64891122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28163398 + ... + 28165701.

Almost surely, 2^64891122048 is an apocalyptic number.

It is an amenable number.

64891122048 is an abundant number, since it is smaller than the sum of its proper divisors (121839844452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64891122048 is a wasteful number, since it uses less digits than its factorization.

64891122048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56329119 (or 56329104 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 64891122048 in words is "sixty-four billion, eight hundred ninety-one million, one hundred twenty-two thousand, forty-eight".