40512523123 has 2 divisors, whose sum is σ = 40512523124. Its totient is φ = 40512523122.

The previous prime is 40512523111. The next prime is 40512523169. The reversal of 40512523123 is 32132521504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40512523123 - 2²¹ = 40510425971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40512523091 and 40512523100.

It is not a weakly prime, because it can be changed into another prime (40512523223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256261561 + 20256261562.

It is an arithmetic number, because the mean of its divisors is an integer number (20256261562).

Almost surely, 2^40512523123 is an apocalyptic number.

40512523123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40512523123 is an equidigital number, since it uses as much as digits as its factorization.

40512523123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 40512523123 in words is "forty billion, five hundred twelve million, five hundred twenty-three thousand, one hundred twenty-three".