74377733987 has 2 divisors, whose sum is σ = 74377733988. Its totient is φ = 74377733986.

The previous prime is 74377733939. The next prime is 74377734043. The reversal of 74377733987 is 78933777347.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74377733987 is a prime.

It is not a weakly prime, because it can be changed into another prime (74377732987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37188866993 + 37188866994.

It is an arithmetic number, because the mean of its divisors is an integer number (37188866994).

Almost surely, 2^74377733987 is an apocalyptic number.

74377733987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74377733987 is an equidigital number, since it uses as much as digits as its factorization.

74377733987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130691232, while the sum is 65.

The spelling of 74377733987 in words is "seventy-four billion, three hundred seventy-seven million, seven hundred thirty-three thousand, nine hundred eighty-seven".