40639766571982 has 8 divisors (see below), whose sum is σ = 61010407271952. Its totient is φ = 20302964148000.

The previous prime is 40639766571953. The next prime is 40639766572051. The reversal of 40639766571982 is 28917566793604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8459565994 + ... + 8459570797.

It is an arithmetic number, because the mean of its divisors is an integer number (7626300908994).

It is a 1-persistent number, because it is pandigital, but 2⋅40639766571982 = 81279533143964 is not.

Almost surely, 2^{40639766571982} is an apocalyptic number.

40639766571982 is a deficient number, since it is larger than the sum of its proper divisors (20370640699970).

40639766571982 is a wasteful number, since it uses less digits than its factorization.

40639766571982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16919137994.

The product of its (nonzero) digits is 823011840, while the sum is 73.

The spelling of 40639766571982 in words is "forty trillion, six hundred thirty-nine billion, seven hundred sixty-six million, five hundred seventy-one thousand, nine hundred eighty-two".