40125959961819 has 16 divisors (see below), whose sum is σ = 53513008454400. Its totient is φ = 26744776271136.

The previous prime is 40125959961817. The next prime is 40125959961839. The reversal of 40125959961819 is 91816995952104.

It is not a de Polignac number, because 40125959961819 - 2¹ = 40125959961817 is a prime.

It is a super-2 number, since 2×40125959961819² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40125959961817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357403897 + ... + 357516149.

It is an arithmetic number, because the mean of its divisors is an integer number (3344563028400).

Almost surely, 2^{40125959961819} is an apocalyptic number.

40125959961819 is a deficient number, since it is larger than the sum of its proper divisors (13387048492581).

40125959961819 is a wasteful number, since it uses less digits than its factorization.

40125959961819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137314.

The product of its (nonzero) digits is 62985600, while the sum is 69.

The spelling of 40125959961819 in words is "forty trillion, one hundred twenty-five billion, nine hundred fifty-nine million, nine hundred sixty-one thousand, eight hundred nineteen".