155666406650600 has 48 divisors (see below), whose sum is σ = 361997795524320. Its totient is φ = 62253934692800.

The previous prime is 155666406650593. The next prime is 155666406650611. The reversal of 155666406650600 is 6056604666551.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77936132 + ... + 79908531.

It is an arithmetic number, because the mean of its divisors is an integer number (7541620740090).

Almost surely, 2^{155666406650600} is an apocalyptic number.

155666406650600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155666406650600 is an abundant number, since it is smaller than the sum of its proper divisors (206331388873720).

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

155666406650600 is a wasteful number, since it uses less digits than its factorization.

155666406650600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157849610 (or 157849601 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 56.

The spelling of 155666406650600 in words is "one hundred fifty-five trillion, six hundred sixty-six billion, four hundred six million, six hundred fifty thousand, six hundred".