155144030400 has 378 divisors, whose sum is σ = 572636571260. Its totient is φ = 41368942080.

The previous prime is 155144030389. The next prime is 155144030413. The reversal of 155144030400 is 4030441551.

It is a happy number.

155144030400 is a `hidden beast` number, since 1 + 551 + 4 + 40 + 30 + 40 + 0 = 666.

It is a super-2 number, since 2×155144030400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10490211 + ... + 10504989.

Almost surely, 2^155144030400 is an apocalyptic number.

155144030400 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 155144030400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286318285630).

155144030400 is an abundant number, since it is smaller than the sum of its proper divisors (417492540860).

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

155144030400 is an frugal number, since it uses more digits than its factorization.

155144030400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825 (or 14789 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 155144030400 its reverse (4030441551), we get a palindrome (159174471951).

The spelling of 155144030400 in words is "one hundred fifty-five billion, one hundred forty-four million, thirty thousand, four hundred".