40345592121 has 6 divisors (see below), whose sum is σ = 58276966410. Its totient is φ = 26897061408.

The previous prime is 40345592113. The next prime is 40345592129. The reversal of 40345592121 is 12129554304.

40345592121 is a `hidden beast` number, since 4 + 0 + 3 + 45 + 592 + 1 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (40345592113) and next prime (40345592129).

It can be written as a sum of positive squares in only one way, i.e., 27982598400 + 12362993721 = 167280^2 + 111189^2 .

It is not a de Polignac number, because 40345592121 - 2³ = 40345592113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40345592129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2241421776 + ... + 2241421793.

It is an arithmetic number, because the mean of its divisors is an integer number (9712827735).

Almost surely, 2^40345592121 is an apocalyptic number.

It is an amenable number.

40345592121 is a deficient number, since it is larger than the sum of its proper divisors (17931374289).

40345592121 is a wasteful number, since it uses less digits than its factorization.

40345592121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482843575 (or 4482843572 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 40345592121 in words is "forty billion, three hundred forty-five million, five hundred ninety-two thousand, one hundred twenty-one".