40021535254 has 32 divisors (see below), whose sum is σ = 62569584000. Its totient is φ = 19183363584.

The previous prime is 40021535243. The next prime is 40021535261. The reversal of 40021535254 is 45253512004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3337782 + ... + 3349750.

It is an arithmetic number, because the mean of its divisors is an integer number (1955299500).

Almost surely, 2^40021535254 is an apocalyptic number.

40021535254 is a deficient number, since it is larger than the sum of its proper divisors (22548048746).

40021535254 is a wasteful number, since it uses less digits than its factorization.

40021535254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12732.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 40021535254 in words is "forty billion, twenty-one million, five hundred thirty-five thousand, two hundred fifty-four".