40019621976 has 24 divisors (see below), whose sum is σ = 108386476380. Its totient is φ = 13339873968.

The previous prime is 40019621951. The next prime is 40019622023. The reversal of 40019621976 is 67912691004.

40019621976 is a `hidden beast` number, since 4 + 0 + 0 + 19 + 621 + 9 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277913970 + ... + 277914113.

Almost surely, 2^40019621976 is an apocalyptic number.

It is an amenable number.

40019621976 is an abundant number, since it is smaller than the sum of its proper divisors (68366854404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40019621976 is a wasteful number, since it uses less digits than its factorization.

40019621976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555828095 (or 555828088 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 40019621976 in words is "forty billion, nineteen million, six hundred twenty-one thousand, nine hundred seventy-six".