155450446265664 has 168 divisors, whose sum is σ = 486320501523168. Its totient is φ = 47082603525120.

The previous prime is 155450446265603. The next prime is 155450446265689. The reversal of 155450446265664 is 466562644054551.

It is a happy number.

155450446265664 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 5 + 0 + 4 + 4 + 62 + 6 + 566 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6510159 + ... + 18795825.

Almost surely, 2^{155450446265664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155450446265664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243160250761584).

155450446265664 is an abundant number, since it is smaller than the sum of its proper divisors (330870055257504).

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

155450446265664 is a wasteful number, since it uses less digits than its factorization.

155450446265664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287693 (or 12287680 counting only the distinct ones).

The product of its (nonzero) digits is 414720000, while the sum is 63.

The spelling of 155450446265664 in words is "one hundred fifty-five trillion, four hundred fifty billion, four hundred forty-six million, two hundred sixty-five thousand, six hundred sixty-four".