40056262514621 has 4 divisors (see below), whose sum is σ = 40056875501532. Its totient is φ = 40055649527712.

The previous prime is 40056262514557. The next prime is 40056262514629. The reversal of 40056262514621 is 12641526265004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30902091871225 + 9154170643396 = 5558965^2 + 3025586^2 .

It is a cyclic number.

It is not a de Polignac number, because 40056262514621 - 2⁶ = 40056262514557 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 (40056262514629) 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, 306395426 + ... + 306526131.

It is an arithmetic number, because the mean of its divisors is an integer number (10014218875383).

Almost surely, 2^{40056262514621} is an apocalyptic number.

It is an amenable number.

40056262514621 is a deficient number, since it is larger than the sum of its proper divisors (612986911).

40056262514621 is an equidigital number, since it uses as much as digits as its factorization.

40056262514621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612986910.

The product of its (nonzero) digits is 691200, while the sum is 44.

Adding to 40056262514621 its reverse (12641526265004), we get a palindrome (52697788779625).

The spelling of 40056262514621 in words is "forty trillion, fifty-six billion, two hundred sixty-two million, five hundred fourteen thousand, six hundred twenty-one".