155729366666 has 16 divisors (see below), whose sum is σ = 233796589440. Its totient is φ = 77797201680.

The previous prime is 155729366647. The next prime is 155729366671. The reversal of 155729366666 is 666663927551.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 155729366599 and 155729366608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16368851 + ... + 16378361.

It is an arithmetic number, because the mean of its divisors is an integer number (14612286840).

Almost surely, 2^155729366666 is an apocalyptic number.

155729366666 is a deficient number, since it is larger than the sum of its proper divisors (78067222774).

155729366666 is a wasteful number, since it uses less digits than its factorization.

155729366666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15749.

The product of its digits is 73483200, while the sum is 62.

The spelling of 155729366666 in words is "one hundred fifty-five billion, seven hundred twenty-nine million, three hundred sixty-six thousand, six hundred sixty-six".