40051720844 has 6 divisors (see below), whose sum is σ = 70090511484. Its totient is φ = 20025860420.

The previous prime is 40051720829. The next prime is 40051720847. The reversal of 40051720844 is 44802715004.

It is not an unprimeable number, because it can be changed into a prime (40051720847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006465102 + ... + 5006465109.

It is an arithmetic number, because the mean of its divisors is an integer number (11681751914).

Almost surely, 2^40051720844 is an apocalyptic number.

It is an amenable number.

40051720844 is a deficient number, since it is larger than the sum of its proper divisors (30038790640).

40051720844 is a wasteful number, since it uses less digits than its factorization.

40051720844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012930215 (or 10012930213 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The spelling of 40051720844 in words is "forty billion, fifty-one million, seven hundred twenty thousand, eight hundred forty-four".