155206545612 has 12 divisors (see below), whose sum is σ = 362148606456. Its totient is φ = 51735515200.

The previous prime is 155206545577. The next prime is 155206545677. The reversal of 155206545612 is 216545602551.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6466939389 + ... + 6466939412.

It is an arithmetic number, because the mean of its divisors is an integer number (30179050538).

Almost surely, 2^155206545612 is an apocalyptic number.

155206545612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155206545612 is an abundant number, since it is smaller than the sum of its proper divisors (206942060844).

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

155206545612 is a wasteful number, since it uses less digits than its factorization.

155206545612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12933878808 (or 12933878806 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 155206545612 in words is "one hundred fifty-five billion, two hundred six million, five hundred forty-five thousand, six hundred twelve".