74965823821 has 8 divisors (see below), whose sum is σ = 85772481984. Its totient is φ = 64183479360.

The previous prime is 74965823819. The next prime is 74965823837. The reversal of 74965823821 is 12832856947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74965823821 - 2¹ = 74965823819 is a prime.

It is a super-2 number, since 2×74965823821² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74965827821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6071815 + ... + 6084148.

It is an arithmetic number, because the mean of its divisors is an integer number (10721560248).

Almost surely, 2^74965823821 is an apocalyptic number.

It is an amenable number.

74965823821 is a deficient number, since it is larger than the sum of its proper divisors (10806658163).

74965823821 is a wasteful number, since it uses less digits than its factorization.

74965823821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156851.

The product of its digits is 5806080, while the sum is 55.

The spelling of 74965823821 in words is "seventy-four billion, nine hundred sixty-five million, eight hundred twenty-three thousand, eight hundred twenty-one".