40987259820 has 96 divisors (see below), whose sum is σ = 137324859840. Its totient is φ = 10089169920.

The previous prime is 40987259813. The next prime is 40987259837. The reversal of 40987259820 is 2895278904.

40987259820 is a `hidden beast` number, since 40 + 9 + 8 + 7 + 2 + 598 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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, 2912301 + ... + 2926340.

It is an arithmetic number, because the mean of its divisors is an integer number (1430467290).

Almost surely, 2^40987259820 is an apocalyptic number.

It is an amenable number.

40987259820 is an abundant number, since it is smaller than the sum of its proper divisors (96337600020).

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

40987259820 is a wasteful number, since it uses less digits than its factorization.

40987259820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838672 (or 5838664 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 40987259820 in words is "forty billion, nine hundred eighty-seven million, two hundred fifty-nine thousand, eight hundred twenty".