155145145494144 has 256 divisors, whose sum is σ = 467192185488000. Its totient is φ = 45221647417344.

The previous prime is 155145145494137. The next prime is 155145145494191. The reversal of 155145145494144 is 441494541541551.

It is a super-2 number, since 2×155145145494144² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1859832724 + ... + 1859916140.

Almost surely, 2^{155145145494144} 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 155145145494144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233596092744000).

155145145494144 is an abundant number, since it is smaller than the sum of its proper divisors (312047039993856).

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

155145145494144 is a wasteful number, since it uses less digits than its factorization.

155145145494144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103075 (or 103063 counting only the distinct ones).

The product of its digits is 23040000, while the sum is 57.

The spelling of 155145145494144 in words is "one hundred fifty-five trillion, one hundred forty-five billion, one hundred forty-five million, four hundred ninety-four thousand, one hundred forty-four".