40155232353021 has 12 divisors (see below), whose sum is σ = 58653710179740. Its totient is φ = 26469366644160.

The previous prime is 40155232352953. The next prime is 40155232353077. The reversal of 40155232353021 is 12035323255104.

40155232353021 is a `hidden beast` number, since 4 + 0 + 1 + 55 + 232 + 353 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7356359732121 + 32798872620900 = 2712261^2 + 5727030^2 .

It is not a de Polignac number, because 40155232353021 - 2²¹ = 40155230255869 is a prime.

It is a super-2 number, since 2×40155232353021² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155232353521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25065687310 + ... + 25065688911.

It is an arithmetic number, because the mean of its divisors is an integer number (4887809181645).

Almost surely, 2^{40155232353021} is an apocalyptic number.

It is an amenable number.

40155232353021 is a deficient number, since it is larger than the sum of its proper divisors (18498477826719).

40155232353021 is a wasteful number, since it uses less digits than its factorization.

40155232353021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50131376316 (or 50131376313 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 40155232353021 in words is "forty trillion, one hundred fifty-five billion, two hundred thirty-two million, three hundred fifty-three thousand, twenty-one".