44266972509 has 12 divisors (see below), whose sum is σ = 63959074816. Its totient is φ = 29503057032.

The previous prime is 44266972499. The next prime is 44266972573. The reversal of 44266972509 is 90527966244.

44266972509 is a `hidden beast` number, since 4 + 4 + 2 + 6 + 69 + 72 + 509 = 666.

It is not a de Polignac number, because 44266972509 - 2⁴ = 44266972493 is a prime.

It is a super-2 number, since 2×44266972509² (a number of 22 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 (44266972579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 654127 + ... + 718620.

Almost surely, 2^44266972509 is an apocalyptic number.

It is an amenable number.

44266972509 is a deficient number, since it is larger than the sum of its proper divisors (19692102307).

44266972509 is a wasteful number, since it uses less digits than its factorization.

44266972509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376336 (or 1376333 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

It can be divided in two parts, 442 and 66972509, that added together give a triangular number (66972951 = T₁₁₅₇₃).

The spelling of 44266972509 in words is "forty-four billion, two hundred sixty-six million, nine hundred seventy-two thousand, five hundred nine".