74030778131 has 2 divisors, whose sum is σ = 74030778132. Its totient is φ = 74030778130.

The previous prime is 74030778121. The next prime is 74030778149. The reversal of 74030778131 is 13187703047.

It is a weak prime.

It is an emirp because it is prime and its reverse (13187703047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74030778131 is a prime.

It is a super-2 number, since 2×74030778131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74030778121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37015389065 + 37015389066.

It is an arithmetic number, because the mean of its divisors is an integer number (37015389066).

Almost surely, 2^74030778131 is an apocalyptic number.

74030778131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74030778131 is an equidigital number, since it uses as much as digits as its factorization.

74030778131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 74030778131 in words is "seventy-four billion, thirty million, seven hundred seventy-eight thousand, one hundred thirty-one".