74381541137281 has 16 divisors (see below), whose sum is σ = 90377102847744. Its totient is φ = 59832989371584.

The previous prime is 74381541137263. The next prime is 74381541137329. The reversal of 74381541137281 is 18273114518347.

It is a cyclic number.

It is not a de Polignac number, because 74381541137281 - 2¹³ = 74381541129089 is a prime.

It is a super-2 number, since 2×74381541137281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74381541137881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4358455146 + ... + 4358472211.

It is an arithmetic number, because the mean of its divisors is an integer number (5648568927984).

Almost surely, 2^{74381541137281} is an apocalyptic number.

It is an amenable number.

74381541137281 is a deficient number, since it is larger than the sum of its proper divisors (15995561710463).

74381541137281 is a wasteful number, since it uses less digits than its factorization.

74381541137281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8716927440.

The product of its digits is 4515840, while the sum is 55.

The spelling of 74381541137281 in words is "seventy-four trillion, three hundred eighty-one billion, five hundred forty-one million, one hundred thirty-seven thousand, two hundred eighty-one".