40007761964 has 6 divisors (see below), whose sum is σ = 70013583444. Its totient is φ = 20003880980.

The previous prime is 40007761961. The next prime is 40007761973. The reversal of 40007761964 is 46916770004.

It is not an unprimeable number, because it can be changed into a prime (40007761961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000970242 + ... + 5000970249.

It is an arithmetic number, because the mean of its divisors is an integer number (11668930574).

Almost surely, 2^40007761964 is an apocalyptic number.

It is an amenable number.

40007761964 is a deficient number, since it is larger than the sum of its proper divisors (30005821480).

40007761964 is a wasteful number, since it uses less digits than its factorization.

40007761964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001940495 (or 10001940493 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 40007761964 in words is "forty billion, seven million, seven hundred sixty-one thousand, nine hundred sixty-four".