73707249966 has 128 divisors (see below), whose sum is σ = 177188290560. Its totient is φ = 19985129472.

The previous prime is 73707249949. The next prime is 73707249971. The reversal of 73707249966 is 66994270737.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89125645 + ... + 89126471.

It is an arithmetic number, because the mean of its divisors is an integer number (1384283520).

Almost surely, 2^73707249966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73707249966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88594145280).

73707249966 is an abundant number, since it is smaller than the sum of its proper divisors (103481040594).

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

73707249966 is a wasteful number, since it uses less digits than its factorization.

73707249966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478.

The product of its (nonzero) digits is 24004512, while the sum is 60.

The spelling of 73707249966 in words is "seventy-three billion, seven hundred seven million, two hundred forty-nine thousand, nine hundred sixty-six".