40245406345 has 16 divisors (see below), whose sum is σ = 49609543248. Its totient is φ = 31319965440.

The previous prime is 40245406307. The next prime is 40245406367. The reversal of 40245406345 is 54360454204.

It can be written as a sum of positive squares in 8 ways, for example, as 1226120256 + 39019286089 = 35016^2 + 197533^2 .

It is not a de Polignac number, because 40245406345 - 2¹³ = 40245398153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065727 + ... + 1102843.

It is an arithmetic number, because the mean of its divisors is an integer number (3100596453).

Almost surely, 2^40245406345 is an apocalyptic number.

It is an amenable number.

40245406345 is a deficient number, since it is larger than the sum of its proper divisors (9364136903).

40245406345 is a wasteful number, since it uses less digits than its factorization.

40245406345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43020.

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 40245406345 in words is "forty billion, two hundred forty-five million, four hundred six thousand, three hundred forty-five".