40267261765 has 8 divisors (see below), whose sum is σ = 48346523928. Its totient is φ = 32196602880.

The previous prime is 40267261763. The next prime is 40267261777. The reversal of 40267261765 is 56716276204.

It can be written as a sum of positive squares in 4 ways, for example, as 3202541281 + 37064720484 = 56591^2 + 192522^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40267261765 - 2¹ = 40267261763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40267261763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140516 + ... + 2159245.

It is an arithmetic number, because the mean of its divisors is an integer number (6043315491).

Almost surely, 2^40267261765 is an apocalyptic number.

It is an amenable number.

40267261765 is a deficient number, since it is larger than the sum of its proper divisors (8079262163).

40267261765 is a wasteful number, since it uses less digits than its factorization.

40267261765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301639.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 40267261765 in words is "forty billion, two hundred sixty-seven million, two hundred sixty-one thousand, seven hundred sixty-five".