74355240031 has 4 divisors (see below), whose sum is σ = 74376714832. Its totient is φ = 74333765232.

The previous prime is 74355240007. The next prime is 74355240041. The reversal of 74355240031 is 13004255347.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74355240031 - 2¹⁷ = 74355108959 is a prime.

It is a super-2 number, since 2×74355240031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74355240041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10732206 + ... + 10739131.

It is an arithmetic number, because the mean of its divisors is an integer number (18594178708).

Almost surely, 2^74355240031 is an apocalyptic number.

74355240031 is a deficient number, since it is larger than the sum of its proper divisors (21474801).

74355240031 is a wasteful number, since it uses less digits than its factorization.

74355240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21474800.

The product of its (nonzero) digits is 50400, while the sum is 34.

Adding to 74355240031 its reverse (13004255347), we get a palindrome (87359495378).

The spelling of 74355240031 in words is "seventy-four billion, three hundred fifty-five million, two hundred forty thousand, thirty-one".