74867240397 has 4 divisors (see below), whose sum is σ = 99822987200. Its totient is φ = 49911493596.

The previous prime is 74867240369. The next prime is 74867240419. The reversal of 74867240397 is 79304276847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-74867240397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74867248397) 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, 12477873397 + ... + 12477873402.

It is an arithmetic number, because the mean of its divisors is an integer number (24955746800).

Almost surely, 2^74867240397 is an apocalyptic number.

It is an amenable number.

74867240397 is a deficient number, since it is larger than the sum of its proper divisors (24955746803).

74867240397 is a wasteful number, since it uses less digits than its factorization.

74867240397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24955746802.

The product of its (nonzero) digits is 14224896, while the sum is 57.

The spelling of 74867240397 in words is "seventy-four billion, eight hundred sixty-seven million, two hundred forty thousand, three hundred ninety-seven".