64888149856 has 24 divisors (see below), whose sum is σ = 127859606784. Its totient is φ = 32415868800.

The previous prime is 64888149827. The next prime is 64888149857. The reversal of 64888149856 is 65894188846.

64888149856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64888149791 and 64888149800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64888149857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844035 + ... + 917698.

It is an arithmetic number, because the mean of its divisors is an integer number (5327483616).

Almost surely, 2^64888149856 is an apocalyptic number.

It is an amenable number.

64888149856 is a deficient number, since it is larger than the sum of its proper divisors (62971456928).

64888149856 is a wasteful number, since it uses less digits than its factorization.

64888149856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762894 (or 1762886 counting only the distinct ones).

The product of its digits is 106168320, while the sum is 67.

The spelling of 64888149856 in words is "sixty-four billion, eight hundred eighty-eight million, one hundred forty-nine thousand, eight hundred fifty-six".