40440428416 has 16 divisors (see below), whose sum is σ = 80564916240. Its totient is φ = 20220214144.

The previous prime is 40440428363. The next prime is 40440428443. The reversal of 40440428416 is 61482404404.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157970296 + ... + 157970551.

It is an arithmetic number, because the mean of its divisors is an integer number (5035307265).

Almost surely, 2^40440428416 is an apocalyptic number.

It is an amenable number.

40440428416 is a deficient number, since it is larger than the sum of its proper divisors (40124487824).

40440428416 is an equidigital number, since it uses as much as digits as its factorization.

40440428416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315940861 (or 315940849 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 37.

The spelling of 40440428416 in words is "forty billion, four hundred forty million, four hundred twenty-eight thousand, four hundred sixteen".