74678244890 has 32 divisors (see below), whose sum is σ = 136505571840. Its totient is φ = 29408537664.

The previous prime is 74678244877. The next prime is 74678244911. The reversal of 74678244890 is 9844287647.

It is a super-2 number, since 2×74678244890² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167479 + ... + 1229781.

It is an arithmetic number, because the mean of its divisors is an integer number (4265799120).

Almost surely, 2^74678244890 is an apocalyptic number.

74678244890 is a deficient number, since it is larger than the sum of its proper divisors (61827326950).

74678244890 is a wasteful number, since it uses less digits than its factorization.

74678244890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64166.

The product of its (nonzero) digits is 21676032, while the sum is 59.

The spelling of 74678244890 in words is "seventy-four billion, six hundred seventy-eight million, two hundred forty-four thousand, eight hundred ninety".