40125959961820 has 24 divisors (see below), whose sum is σ = 86982726112128. Its totient is φ = 15532629662400.

The previous prime is 40125959961817. The next prime is 40125959961839. The reversal of 40125959961820 is 2816995952104.

It is a super-2 number, since 2×40125959961820² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32359644511 + ... + 32359645750.

It is an arithmetic number, because the mean of its divisors is an integer number (3624280254672).

Almost surely, 2^{40125959961820} is an apocalyptic number.

It is an amenable number.

40125959961820 is an abundant number, since it is smaller than the sum of its proper divisors (46856766150308).

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

40125959961820 is a wasteful number, since it uses less digits than its factorization.

40125959961820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64719290301 (or 64719290299 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 40125959961820 in words is "forty trillion, one hundred twenty-five billion, nine hundred fifty-nine million, nine hundred sixty-one thousand, eight hundred twenty".