44040157537 has 4 divisors (see below), whose sum is σ = 44120670256. Its totient is φ = 43959644820.

The previous prime is 44040157529. The next prime is 44040157541. The reversal of 44040157537 is 73575104044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44040157537 - 2³ = 44040157529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44040157537.

It is not an unprimeable number, because it can be changed into a prime (44040157507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40255539 + ... + 40256632.

It is an arithmetic number, because the mean of its divisors is an integer number (11030167564).

Almost surely, 2^44040157537 is an apocalyptic number.

It is an amenable number.

44040157537 is a deficient number, since it is larger than the sum of its proper divisors (80512719).

44040157537 is an equidigital number, since it uses as much as digits as its factorization.

44040157537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80512718.

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 44040157537 in words is "forty-four billion, forty million, one hundred fifty-seven thousand, five hundred thirty-seven".