40306728253 has 16 divisors (see below), whose sum is σ = 45715763520. Its totient is φ = 35215171200.

The previous prime is 40306728247. The next prime is 40306728263. The reversal of 40306728253 is 35282760304.

It is not a de Polignac number, because 40306728253 - 2²⁵ = 40273173821 is a prime.

It is a super-2 number, since 2×40306728253² (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 (40306728263) 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, 636738 + ... + 697171.

It is an arithmetic number, because the mean of its divisors is an integer number (2857235220).

Almost surely, 2^40306728253 is an apocalyptic number.

It is an amenable number.

40306728253 is a deficient number, since it is larger than the sum of its proper divisors (5409035267).

40306728253 is a wasteful number, since it uses less digits than its factorization.

40306728253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334028.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 40306728253 in words is "forty billion, three hundred six million, seven hundred twenty-eight thousand, two hundred fifty-three".