40015512502123 has 2 divisors, whose sum is σ = 40015512502124. Its totient is φ = 40015512502122.

The previous prime is 40015512502079. The next prime is 40015512502127. The reversal of 40015512502123 is 32120521551004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40015512502123 - 2³³ = 40006922567531 is a prime.

It is not a weakly prime, because it can be changed into another prime (40015512502127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20007756251061 + 20007756251062.

It is an arithmetic number, because the mean of its divisors is an integer number (20007756251062).

Almost surely, 2^{40015512502123} is an apocalyptic number.

40015512502123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40015512502123 is an equidigital number, since it uses as much as digits as its factorization.

40015512502123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 40015512502123 in words is "forty trillion, fifteen billion, five hundred twelve million, five hundred two thousand, one hundred twenty-three".