66873136658350 has 24 divisors (see below), whose sum is σ = 135691673656968. Its totient is φ = 24317504239200.

The previous prime is 66873136658327. The next prime is 66873136658357. The reversal of 66873136658350 is 5385663137866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66873136658357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60793760049 + ... + 60793761148.

It is an arithmetic number, because the mean of its divisors is an integer number (5653819735707).

Almost surely, 2^{66873136658350} is an apocalyptic number.

66873136658350 is an abundant number, since it is smaller than the sum of its proper divisors (68818536998618).

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

66873136658350 is a wasteful number, since it uses less digits than its factorization.

66873136658350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121587521220 (or 121587521215 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 67.

The spelling of 66873136658350 in words is "sixty-six trillion, eight hundred seventy-three billion, one hundred thirty-six million, six hundred fifty-eight thousand, three hundred fifty".