74728415033 has 2 divisors, whose sum is σ = 74728415034. Its totient is φ = 74728415032.

The previous prime is 74728415009. The next prime is 74728415053. The reversal of 74728415033 is 33051482747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51335324329 + 23393090704 = 226573^2 + 152948^2 .

It is a cyclic number.

It is not a de Polignac number, because 74728415033 - 2²⁰ = 74727366457 is a prime.

It is not a weakly prime, because it can be changed into another prime (74728415053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37364207516 + 37364207517.

It is an arithmetic number, because the mean of its divisors is an integer number (37364207517).

Almost surely, 2^74728415033 is an apocalyptic number.

It is an amenable number.

74728415033 is a deficient number, since it is larger than the sum of its proper divisors (1).

74728415033 is an equidigital number, since it uses as much as digits as its factorization.

74728415033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 74728415033 in words is "seventy-four billion, seven hundred twenty-eight million, four hundred fifteen thousand, thirty-three".