40173764341561 has 4 divisors (see below), whose sum is σ = 40174241328000. Its totient is φ = 40173287355124.

The previous prime is 40173764341549. The next prime is 40173764341589. The reversal of 40173764341561 is 16514346737104.

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 not a de Polignac number, because 40173764341561 - 2⁴³ = 31377671319353 is a prime.

It is a super-2 number, since 2×40173764341561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40173764341499 and 40173764341508.

It is not an unprimeable number, because it can be changed into a prime (40173764341861) 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, 238366861 + ... + 238535338.

It is an arithmetic number, because the mean of its divisors is an integer number (10043560332000).

Almost surely, 2^{40173764341561} is an apocalyptic number.

It is an amenable number.

40173764341561 is a deficient number, since it is larger than the sum of its proper divisors (476986439).

40173764341561 is an equidigital number, since it uses as much as digits as its factorization.

40173764341561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476986438.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 40173764341561 in words is "forty trillion, one hundred seventy-three billion, seven hundred sixty-four million, three hundred forty-one thousand, five hundred sixty-one".