73553412372666 has 32 divisors (see below), whose sum is σ = 150695658562176. Its totient is φ = 23919672000000.

The previous prime is 73553412372623. The next prime is 73553412372673. The reversal of 73553412372666 is 66627321435537.

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, 47833291 + ... + 49347041.

It is an arithmetic number, because the mean of its divisors is an integer number (4709239330068).

Almost surely, 2^{73553412372666} is an apocalyptic number.

73553412372666 is an abundant number, since it is smaller than the sum of its proper divisors (77142246189510).

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

73553412372666 is a wasteful number, since it uses less digits than its factorization.

73553412372666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711318.

The product of its digits is 114307200, while the sum is 60.

The spelling of 73553412372666 in words is "seventy-three trillion, five hundred fifty-three billion, four hundred twelve million, three hundred seventy-two thousand, six hundred sixty-six".