74447821015912 has 64 divisors (see below), whose sum is σ = 145360023552000. Its totient is φ = 35702922264576.

The previous prime is 74447821015811. The next prime is 74447821015913. The reversal of 74447821015912 is 21951012874447.

It is not an unprimeable number, because it can be changed into a prime (74447821015913) 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, 20180889 + ... + 23583127.

It is an arithmetic number, because the mean of its divisors is an integer number (2271250368000).

Almost surely, 2^{74447821015912} is an apocalyptic number.

It is an amenable number.

74447821015912 is a deficient number, since it is larger than the sum of its proper divisors (70912202536088).

74447821015912 is a wasteful number, since it uses less digits than its factorization.

74447821015912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402898 (or 3402894 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 74447821015912 in words is "seventy-four trillion, four hundred forty-seven billion, eight hundred twenty-one million, fifteen thousand, nine hundred twelve".