74246431405 has 4 divisors (see below), whose sum is σ = 89095717692. Its totient is φ = 59397145120.

The previous prime is 74246431361. The next prime is 74246431409. The reversal of 74246431405 is 50413464247.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24862036329 + 49384395076 = 157677^2 + 222226^2 .

It is not a de Polignac number, because 74246431405 - 2¹⁵ = 74246398637 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 (74246431409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7424643136 + ... + 7424643145.

It is an arithmetic number, because the mean of its divisors is an integer number (22273929423).

Almost surely, 2^74246431405 is an apocalyptic number.

It is an amenable number.

74246431405 is a deficient number, since it is larger than the sum of its proper divisors (14849286287).

74246431405 is a wasteful number, since it uses less digits than its factorization.

74246431405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14849286286.

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 74246431405 in words is "seventy-four billion, two hundred forty-six million, four hundred thirty-one thousand, four hundred five".