74212122820 has 48 divisors (see below), whose sum is σ = 170031960000. Its totient is φ = 26983253120.

The previous prime is 74212122791. The next prime is 74212122827. The reversal of 74212122820 is 2822121247.

It is not an unprimeable number, because it can be changed into a prime (74212122827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3454071 + ... + 3475489.

It is an arithmetic number, because the mean of its divisors is an integer number (3542332500).

Almost surely, 2^74212122820 is an apocalyptic number.

It is an amenable number.

74212122820 is an abundant number, since it is smaller than the sum of its proper divisors (95819837180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74212122820 is a wasteful number, since it uses less digits than its factorization.

74212122820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37188 (or 37186 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The spelling of 74212122820 in words is "seventy-four billion, two hundred twelve million, one hundred twenty-two thousand, eight hundred twenty".