40642657772 has 6 divisors (see below), whose sum is σ = 71124651108. Its totient is φ = 20321328884.

The previous prime is 40642657763. The next prime is 40642657799. The reversal of 40642657772 is 27775624604.

It is a self number, because there is not a number n which added to its sum of digits gives 40642657772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080332218 + ... + 5080332225.

It is an arithmetic number, because the mean of its divisors is an integer number (11854108518).

Almost surely, 2^40642657772 is an apocalyptic number.

It is an amenable number.

40642657772 is a deficient number, since it is larger than the sum of its proper divisors (30481993336).

40642657772 is a wasteful number, since it uses less digits than its factorization.

40642657772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10160664447 (or 10160664445 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 50.

The spelling of 40642657772 in words is "forty billion, six hundred forty-two million, six hundred fifty-seven thousand, seven hundred seventy-two".