40135002737645 has 4 divisors (see below), whose sum is σ = 48162003285180. Its totient is φ = 32108002190112.

The previous prime is 40135002737639. The next prime is 40135002737653. The reversal of 40135002737645 is 54673720053104.

It is a happy number.

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 21838321576201 + 18296681161444 = 4673149^2 + 4277462^2 .

It is a cyclic number.

It is not a de Polignac number, because 40135002737645 - 2⁴² = 35736956226541 is a prime.

It is a super-3 number, since 3×40135002737645³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 40135002737645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4013500273760 + ... + 4013500273769.

It is an arithmetic number, because the mean of its divisors is an integer number (12040500821295).

Almost surely, 2^{40135002737645} is an apocalyptic number.

It is an amenable number.

40135002737645 is a deficient number, since it is larger than the sum of its proper divisors (8027000547535).

40135002737645 is an equidigital number, since it uses as much as digits as its factorization.

40135002737645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027000547534.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 40135002737645 in words is "forty trillion, one hundred thirty-five billion, two million, seven hundred thirty-seven thousand, six hundred forty-five".