40875731381 has 4 divisors (see below), whose sum is σ = 41485816992. Its totient is φ = 40265645772.

The previous prime is 40875731363. The next prime is 40875731401. The reversal of 40875731381 is 18313757804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40875731381 is a prime.

It is a super-2 number, since 2×40875731381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40875731341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305042705 + ... + 305042838.

It is an arithmetic number, because the mean of its divisors is an integer number (10371454248).

Almost surely, 2^40875731381 is an apocalyptic number.

It is an amenable number.

40875731381 is a deficient number, since it is larger than the sum of its proper divisors (610085611).

40875731381 is an equidigital number, since it uses as much as digits as its factorization.

40875731381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610085610.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 40875731381 in words is "forty billion, eight hundred seventy-five million, seven hundred thirty-one thousand, three hundred eighty-one".