155201177104 has 60 divisors (see below), whose sum is σ = 310982794860. Its totient is φ = 75032697600.

The previous prime is 155201177077. The next prime is 155201177123. The reversal of 155201177104 is 401771102551.

It can be written as a sum of positive squares in 2 ways, for example, as 69563007504 + 85638169600 = 263748^2 + 292640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155201177104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21230602 + ... + 21237910.

It is an arithmetic number, because the mean of its divisors is an integer number (5183046581).

Almost surely, 2^155201177104 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 155201177104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155491397430).

155201177104 is an abundant number, since it is smaller than the sum of its proper divisors (155781617756).

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

155201177104 is a wasteful number, since it uses less digits than its factorization.

155201177104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760 (or 8723 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 34.

Adding to 155201177104 its reverse (401771102551), we get a palindrome (556972279655).

The spelling of 155201177104 in words is "one hundred fifty-five billion, two hundred one million, one hundred seventy-seven thousand, one hundred four".