40812456901 has 2 divisors, whose sum is σ = 40812456902. Its totient is φ = 40812456900.

The previous prime is 40812456899. The next prime is 40812456907. The reversal of 40812456901 is 10965421804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25424302500 + 15388154401 = 159450^2 + 124049^2 .

It is a cyclic number.

It is not a de Polignac number, because 40812456901 - 2¹ = 40812456899 is a prime.

Together with 40812456899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40812456907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20406228450 + 20406228451.

It is an arithmetic number, because the mean of its divisors is an integer number (20406228451).

Almost surely, 2^40812456901 is an apocalyptic number.

It is an amenable number.

40812456901 is a deficient number, since it is larger than the sum of its proper divisors (1).

40812456901 is an equidigital number, since it uses as much as digits as its factorization.

40812456901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 40812456901 in words is "forty billion, eight hundred twelve million, four hundred fifty-six thousand, nine hundred one".