40279069509 has 16 divisors (see below), whose sum is σ = 61382131200. Its totient is φ = 23014923120.

The previous prime is 40279069507. The next prime is 40279069549. The reversal of 40279069509 is 90596097204.

It is not a de Polignac number, because 40279069509 - 2¹ = 40279069507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40279069507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258594 + ... + 383964.

It is an arithmetic number, because the mean of its divisors is an integer number (3836383200).

Almost surely, 2^40279069509 is an apocalyptic number.

It is an amenable number.

40279069509 is a deficient number, since it is larger than the sum of its proper divisors (21103061691).

40279069509 is a wasteful number, since it uses less digits than its factorization.

40279069509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140680.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The spelling of 40279069509 in words is "forty billion, two hundred seventy-nine million, sixty-nine thousand, five hundred nine".