74620820450865 has 32 divisors (see below), whose sum is σ = 133011117630720. Its totient is φ = 35469631362816.

The previous prime is 74620820450833. The next prime is 74620820450893. The reversal of 74620820450865 is 56805402802647.

It is not a de Polignac number, because 74620820450865 - 2⁵ = 74620820450833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6597768037 + ... + 6597779346.

It is an arithmetic number, because the mean of its divisors is an integer number (4156597425960).

Almost surely, 2^{74620820450865} is an apocalyptic number.

It is an amenable number.

74620820450865 is a deficient number, since it is larger than the sum of its proper divisors (58390297179855).

74620820450865 is a wasteful number, since it uses less digits than its factorization.

74620820450865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13195547433.

The product of its (nonzero) digits is 25804800, while the sum is 57.

The spelling of 74620820450865 in words is "seventy-four trillion, six hundred twenty billion, eight hundred twenty million, four hundred fifty thousand, eight hundred sixty-five".