66323714481420 has 48 divisors (see below), whose sum is σ = 202588800599808. Its totient is φ = 16078476237760.

The previous prime is 66323714481383. The next prime is 66323714481491. The reversal of 66323714481420 is 2418441732366.

It is a super-2 number, since 2×66323714481420² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50245237584 + ... + 50245238903.

It is an arithmetic number, because the mean of its divisors is an integer number (4220600012496).

Almost surely, 2^{66323714481420} is an apocalyptic number.

66323714481420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66323714481420 is an abundant number, since it is smaller than the sum of its proper divisors (136265086118388).

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

66323714481420 is a wasteful number, since it uses less digits than its factorization.

66323714481420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100490476510 (or 100490476508 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 66323714481420 in words is "sixty-six trillion, three hundred twenty-three billion, seven hundred fourteen million, four hundred eighty-one thousand, four hundred twenty".