43776780040 has 32 divisors (see below), whose sum is σ = 112568863680. Its totient is φ = 15009181632.

The previous prime is 43776779989. The next prime is 43776780109. The reversal of 43776780040 is 4008767734.

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, 78172542 + ... + 78173101.

It is an arithmetic number, because the mean of its divisors is an integer number (3517776990).

Almost surely, 2^43776780040 is an apocalyptic number.

43776780040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43776780040 is an abundant number, since it is smaller than the sum of its proper divisors (68792083640).

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

43776780040 is a wasteful number, since it uses less digits than its factorization.

43776780040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156345661 (or 156345657 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 43776780040 in words is "forty-three billion, seven hundred seventy-six million, seven hundred eighty thousand, forty".