40098978125880 has 128 divisors (see below), whose sum is σ = 125531154432000. Its totient is φ = 10227825856512.

The previous prime is 40098978125867. The next prime is 40098978125881. The reversal of 40098978125880 is 8852187989004.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40098978125881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95526696 + ... + 95945544.

It is an arithmetic number, because the mean of its divisors is an integer number (980712144000).

Almost surely, 2^{40098978125880} is an apocalyptic number.

40098978125880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40098978125880 is an abundant number, since it is smaller than the sum of its proper divisors (85432176306120).

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

40098978125880 is a wasteful number, since it uses less digits than its factorization.

40098978125880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453573 (or 453569 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 69.

The spelling of 40098978125880 in words is "forty trillion, ninety-eight billion, nine hundred seventy-eight million, one hundred twenty-five thousand, eight hundred eighty".