40523983557984 has 144 divisors (see below), whose sum is σ = 124129565973504. Its totient is φ = 12503893881600.

The previous prime is 40523983557983. The next prime is 40523983558141. The reversal of 40523983557984 is 48975538932504.

40523983557984 is a `hidden beast` number, since 4 + 0 + 523 + 9 + 8 + 3 + 5 + 5 + 7 + 98 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40523983557983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98468062 + ... + 98878749.

It is an arithmetic number, because the mean of its divisors is an integer number (862010874816).

Almost surely, 2^{40523983557984} is an apocalyptic number.

It is an amenable number.

40523983557984 is an abundant number, since it is smaller than the sum of its proper divisors (83605582415520).

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

40523983557984 is a wasteful number, since it uses less digits than its factorization.

40523983557984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197346881 (or 197346870 counting only the distinct ones).

The product of its (nonzero) digits is 1306368000, while the sum is 72.

The spelling of 40523983557984 in words is "forty trillion, five hundred twenty-three billion, nine hundred eighty-three million, five hundred fifty-seven thousand, nine hundred eighty-four".