155245343400 has 288 divisors, whose sum is σ = 596400667200. Its totient is φ = 35451648000.

The previous prime is 155245343339. The next prime is 155245343401. The reversal of 155245343400 is 4343542551.

155245343400 is a `hidden beast` number, since 1 + 5 + 5 + 245 + 3 + 4 + 3 + 400 = 666.

It is a super-2 number, since 2×155245343400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (155245343401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15127471 + ... + 15137729.

It is an arithmetic number, because the mean of its divisors is an integer number (2070835650).

Almost surely, 2^155245343400 is an apocalyptic number.

155245343400 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 155245343400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298200333600).

155245343400 is an abundant number, since it is smaller than the sum of its proper divisors (441155323800).

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

155245343400 is a wasteful number, since it uses less digits than its factorization.

155245343400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11489 (or 11477 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 155245343400 its reverse (4343542551), we get a palindrome (159588885951).

The spelling of 155245343400 in words is "one hundred fifty-five billion, two hundred forty-five million, three hundred forty-three thousand, four hundred".