40543523121 has 16 divisors (see below), whose sum is σ = 54827660160. Its totient is φ = 26646499200.

The previous prime is 40543523113. The next prime is 40543523129. The reversal of 40543523121 is 12132534504.

It is an interprime number because it is at equal distance from previous prime (40543523113) and next prime (40543523129).

It is not a de Polignac number, because 40543523121 - 2³ = 40543523113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40543523129) 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, 216541 + ... + 357738.

It is an arithmetic number, because the mean of its divisors is an integer number (3426728760).

Almost surely, 2^40543523121 is an apocalyptic number.

It is an amenable number.

40543523121 is a deficient number, since it is larger than the sum of its proper divisors (14284137039).

40543523121 is a wasteful number, since it uses less digits than its factorization.

40543523121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574616.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 40543523121 in words is "forty billion, five hundred forty-three million, five hundred twenty-three thousand, one hundred twenty-one".