40205400254012 has 24 divisors (see below), whose sum is σ = 81043956424704. Its totient is φ = 17095209555312.

The previous prime is 40205400253999. The next prime is 40205400254023. The reversal of 40205400254012 is 21045200450204.

It is a super-2 number, since 2×40205400254012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5653174208 + ... + 5653181319.

It is an arithmetic number, because the mean of its divisors is an integer number (3376831517696).

Almost surely, 2^{40205400254012} is an apocalyptic number.

It is an amenable number.

40205400254012 is an abundant number, since it is smaller than the sum of its proper divisors (40838556170692).

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

40205400254012 is a wasteful number, since it uses less digits than its factorization.

40205400254012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11306355665 (or 11306355663 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The spelling of 40205400254012 in words is "forty trillion, two hundred five billion, four hundred million, two hundred fifty-four thousand, twelve".