155145544646 has 32 divisors (see below), whose sum is σ = 239047953408. Its totient is φ = 75477396960.

The previous prime is 155145544553. The next prime is 155145544651. The reversal of 155145544646 is 646445541551.

It is a Smith number, since the sum of its digits (50) 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 = 155145544594 and 155145544603.

It is a congruent number.

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, 25628156 + ... + 25634208.

It is an arithmetic number, because the mean of its divisors is an integer number (7470248544).

Almost surely, 2^155145544646 is an apocalyptic number.

155145544646 is a deficient number, since it is larger than the sum of its proper divisors (83902408762).

155145544646 is a wasteful number, since it uses less digits than its factorization.

155145544646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its digits is 5760000, while the sum is 50.

The spelling of 155145544646 in words is "one hundred fifty-five billion, one hundred forty-five million, five hundred forty-four thousand, six hundred forty-six".