40720765096171 has 4 divisors (see below), whose sum is σ = 40720840230600. Its totient is φ = 40720689961744.

The previous prime is 40720765096159. The next prime is 40720765096211. The reversal of 40720765096171 is 17169056702704.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40720765096171 - 2¹¹ = 40720765094123 is a prime.

It is a super-2 number, since 2×40720765096171² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40720765096771) 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, 36748306 + ... + 37840183.

It is an arithmetic number, because the mean of its divisors is an integer number (10180210057650).

Almost surely, 2^{40720765096171} is an apocalyptic number.

40720765096171 is a deficient number, since it is larger than the sum of its proper divisors (75134429).

40720765096171 is an equidigital number, since it uses as much as digits as its factorization.

40720765096171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75134428.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 40720765096171 in words is "forty trillion, seven hundred twenty billion, seven hundred sixty-five million, ninety-six thousand, one hundred seventy-one".