155800120612 has 24 divisors (see below), whose sum is σ = 288143684640. Its totient is φ = 73506024000.

The previous prime is 155800120589. The next prime is 155800120673. The reversal of 155800120612 is 216021008551.

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, 4064593 + ... + 4102744.

It is an arithmetic number, because the mean of its divisors is an integer number (12005986860).

Almost surely, 2^155800120612 is an apocalyptic number.

It is an amenable number.

155800120612 is a deficient number, since it is larger than the sum of its proper divisors (132343564028).

155800120612 is a wasteful number, since it uses less digits than its factorization.

155800120612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8167611 (or 8167609 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 155800120612 in words is "one hundred fifty-five billion, eight hundred million, one hundred twenty thousand, six hundred twelve".