155253045200000 has 384 divisors, whose sum is σ = 440073082270080. Its totient is φ = 54001024000000.

The previous prime is 155253045199999. The next prime is 155253045200003. The reversal of 155253045200000 is 2540352551.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 155253045200000.

It is not an unprimeable number, because it can be changed into a prime (155253045200003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100432940 + ... + 101967060.

It is an arithmetic number, because the mean of its divisors is an integer number (1146023651745).

Almost surely, 2^{155253045200000} is an apocalyptic number.

155253045200000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155253045200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220036541135040).

155253045200000 is an abundant number, since it is smaller than the sum of its proper divisors (284820037070080).

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

155253045200000 is an equidigital number, since it uses as much as digits as its factorization.

155253045200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534194 (or 1534162 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 155253045200000 its reverse (2540352551), we get a palindrome (155255585552551).

The spelling of 155253045200000 in words is "one hundred fifty-five trillion, two hundred fifty-three billion, forty-five million, two hundred thousand".