155113632514220 has 48 divisors (see below), whose sum is σ = 326701218261600. Its totient is φ = 61862224849920.

The previous prime is 155113632514193. The next prime is 155113632514223. The reversal of 155113632514220 is 22415236311551.

It is not an unprimeable number, because it can be changed into a prime (155113632514223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16477115 + ... + 24118925.

It is an arithmetic number, because the mean of its divisors is an integer number (6806275380450).

Almost surely, 2^{155113632514220} is an apocalyptic number.

155113632514220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155113632514220 is an abundant number, since it is smaller than the sum of its proper divisors (171587585747380).

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

155113632514220 is a wasteful number, since it uses less digits than its factorization.

155113632514220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644818 (or 7644816 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 155113632514220 its reverse (22415236311551), we get a palindrome (177528868825771).

The spelling of 155113632514220 in words is "one hundred fifty-five trillion, one hundred thirteen billion, six hundred thirty-two million, five hundred fourteen thousand, two hundred twenty".