74011721863 has 2 divisors, whose sum is σ = 74011721864. Its totient is φ = 74011721862.

The previous prime is 74011721857. The next prime is 74011721887. The reversal of 74011721863 is 36812711047.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74011721863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74011721813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37005860931 + 37005860932.

It is an arithmetic number, because the mean of its divisors is an integer number (37005860932).

Almost surely, 2^74011721863 is an apocalyptic number.

74011721863 is a deficient number, since it is larger than the sum of its proper divisors (1).

74011721863 is an equidigital number, since it uses as much as digits as its factorization.

74011721863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 74011721863 in words is "seventy-four billion, eleven million, seven hundred twenty-one thousand, eight hundred sixty-three".