45512012402491 has 2 divisors, whose sum is σ = 45512012402492. Its totient is φ = 45512012402490.

The previous prime is 45512012402471. The next prime is 45512012402531. The reversal of 45512012402491 is 19420421021554.

It is an a-pointer prime, because the next prime (45512012402531) can be obtained adding 45512012402491 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45512012402491 - 2²⁹ = 45511475531579 is a prime.

It is not a weakly prime, because it can be changed into another prime (45512012402471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22756006201245 + 22756006201246.

It is an arithmetic number, because the mean of its divisors is an integer number (22756006201246).

Almost surely, 2^{45512012402491} is an apocalyptic number.

45512012402491 is a deficient number, since it is larger than the sum of its proper divisors (1).

45512012402491 is an equidigital number, since it uses as much as digits as its factorization.

45512012402491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 45512012402491 in words is "forty-five trillion, five hundred twelve billion, twelve million, four hundred two thousand, four hundred ninety-one".