40649233644 has 48 divisors (see below), whose sum is σ = 105759373440. Its totient is φ = 13501855440.

The previous prime is 40649233637. The next prime is 40649233687. The reversal of 40649233644 is 44633294604.

It is a happy number.

40649233644 is a `hidden beast` number, since 406 + 4 + 9 + 233 + 6 + 4 + 4 = 666.

40649233644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40649233644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634422 + ... + 695549.

It is an arithmetic number, because the mean of its divisors is an integer number (2203320280).

Almost surely, 2^40649233644 is an apocalyptic number.

It is an amenable number.

40649233644 is an abundant number, since it is smaller than the sum of its proper divisors (65110139796).

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

40649233644 is a wasteful number, since it uses less digits than its factorization.

40649233644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330267 (or 1330259 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 40649233644 in words is "forty billion, six hundred forty-nine million, two hundred thirty-three thousand, six hundred forty-four".