74645962579 has 4 divisors (see below), whose sum is σ = 74758892080. Its totient is φ = 74533033080.

The previous prime is 74645962519. The next prime is 74645962583. The reversal of 74645962579 is 97526954647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97526954647 = 19 ⋅5132997613.

It is a cyclic number.

It is not a de Polignac number, because 74645962579 - 2¹⁹ = 74645438291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74645962579.

It is not an unprimeable number, because it can be changed into a prime (74645962519) 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, 56463759 + ... + 56465080.

It is an arithmetic number, because the mean of its divisors is an integer number (18689723020).

Almost surely, 2^74645962579 is an apocalyptic number.

74645962579 is a deficient number, since it is larger than the sum of its proper divisors (112929501).

74645962579 is a wasteful number, since it uses less digits than its factorization.

74645962579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112929500.

The product of its digits is 114307200, while the sum is 64.

The spelling of 74645962579 in words is "seventy-four billion, six hundred forty-five million, nine hundred sixty-two thousand, five hundred seventy-nine".