74978461123 has 2 divisors, whose sum is σ = 74978461124. Its totient is φ = 74978461122.

The previous prime is 74978461081. The next prime is 74978461183. The reversal of 74978461123 is 32116487947.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74978461123 - 2²¹ = 74976363971 is a prime.

It is a super-2 number, since 2×74978461123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74978461183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37489230561 + 37489230562.

It is an arithmetic number, because the mean of its divisors is an integer number (37489230562).

Almost surely, 2^74978461123 is an apocalyptic number.

74978461123 is a deficient number, since it is larger than the sum of its proper divisors (1).

74978461123 is an equidigital number, since it uses as much as digits as its factorization.

74978461123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The spelling of 74978461123 in words is "seventy-four billion, nine hundred seventy-eight million, four hundred sixty-one thousand, one hundred twenty-three".