74744606147 has 4 divisors (see below), whose sum is σ = 75443153976. Its totient is φ = 74046058320.

The previous prime is 74744606059. The next prime is 74744606149. The reversal of 74744606147 is 74160644747.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74744606147 is a prime.

It is a super-2 number, since 2×74744606147² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74744606095 and 74744606104.

It is not an unprimeable number, because it can be changed into a prime (74744606149) 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, 349273754 + ... + 349273967.

It is an arithmetic number, because the mean of its divisors is an integer number (18860788494).

Almost surely, 2^74744606147 is an apocalyptic number.

74744606147 is a deficient number, since it is larger than the sum of its proper divisors (698547829).

74744606147 is a wasteful number, since it uses less digits than its factorization.

74744606147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698547828.

The product of its (nonzero) digits is 3161088, while the sum is 50.

The spelling of 74744606147 in words is "seventy-four billion, seven hundred forty-four million, six hundred six thousand, one hundred forty-seven".