40234621765 has 24 divisors (see below), whose sum is σ = 52311882240. Its totient is φ = 29694285504.

The previous prime is 40234621729. The next prime is 40234621783. The reversal of 40234621765 is 56712643204.

It is not a de Polignac number, because 40234621765 - 2¹⁷ = 40234490693 is a prime.

It is a super-2 number, since 2×40234621765² (a number of 22 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 23 ways as a sum of consecutive naturals, for example, 1527376 + ... + 1553494.

It is an arithmetic number, because the mean of its divisors is an integer number (2179661760).

Almost surely, 2^40234621765 is an apocalyptic number.

It is an amenable number.

40234621765 is a deficient number, since it is larger than the sum of its proper divisors (12077260475).

40234621765 is a wasteful number, since it uses less digits than its factorization.

40234621765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27973 (or 27960 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 40234621765 in words is "forty billion, two hundred thirty-four million, six hundred twenty-one thousand, seven hundred sixty-five".