40854643824 has 40 divisors (see below), whose sum is σ = 106586137872. Its totient is φ = 13483379200.

The previous prime is 40854643811. The next prime is 40854643891. The reversal of 40854643824 is 42834645804.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4208709 + ... + 4218404.

Almost surely, 2^40854643824 is an apocalyptic number.

It is an amenable number.

40854643824 is an abundant number, since it is smaller than the sum of its proper divisors (65731494048).

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

40854643824 is a wasteful number, since it uses less digits than its factorization.

40854643824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427225 (or 8427219 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 48.

The spelling of 40854643824 in words is "forty billion, eight hundred fifty-four million, six hundred forty-three thousand, eight hundred twenty-four".