40208901857039 has 4 divisors (see below), whose sum is σ = 40208917394256. Its totient is φ = 40208886319824.

The previous prime is 40208901856957. The next prime is 40208901857123. The reversal of 40208901857039 is 93075810980204.

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 40208901857039 - 2⁴⁴ = 22616715812623 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 (40208901857339) 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, 2847734 + ... + 9408899.

It is an arithmetic number, because the mean of its divisors is an integer number (10052229348564).

Almost surely, 2^{40208901857039} is an apocalyptic number.

40208901857039 is a deficient number, since it is larger than the sum of its proper divisors (15537217).

40208901857039 is a wasteful number, since it uses less digits than its factorization.

40208901857039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15537216.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 40208901857039 in words is "forty trillion, two hundred eight billion, nine hundred one million, eight hundred fifty-seven thousand, thirty-nine".