44138037012493 has 8 divisors (see below), whose sum is σ = 44187330903480. Its totient is φ = 44088746956800.

The previous prime is 44138037012463. The next prime is 44138037012539. The reversal of 44138037012493 is 39421073083144.

It can be written as a sum of positive squares in 4 ways, for example, as 1334999998084 + 42803037014409 = 1155422^2 + 6542403^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 44138037012493 - 2²¹ = 44138034915341 is a prime.

It is a super-2 number, since 2×44138037012493² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44138037012413) 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, 22387893 + ... + 24279493.

It is an arithmetic number, because the mean of its divisors is an integer number (5523416362935).

Almost surely, 2^{44138037012493} is an apocalyptic number.

It is an amenable number.

44138037012493 is a deficient number, since it is larger than the sum of its proper divisors (49293890987).

44138037012493 is a wasteful number, since it uses less digits than its factorization.

44138037012493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917647.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 44138037012493 in words is "forty-four trillion, one hundred thirty-eight billion, thirty-seven million, twelve thousand, four hundred ninety-three".