155220652330 has 16 divisors (see below), whose sum is σ = 279410488200. Its totient is φ = 62085302272.

The previous prime is 155220652313. The next prime is 155220652369. The reversal of 155220652330 is 33256022551.

It can be written as a sum of positive squares in 4 ways, for example, as 116519139801 + 38701512529 = 341349^2 + 196727^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142855 + ... + 575194.

Almost surely, 2^155220652330 is an apocalyptic number.

155220652330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155220652330 is a deficient number, since it is larger than the sum of its proper divisors (124189835870).

155220652330 is a wasteful number, since it uses less digits than its factorization.

155220652330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739673.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 155220652330 its reverse (33256022551), we get a palindrome (188476674881).

The spelling of 155220652330 in words is "one hundred fifty-five billion, two hundred twenty million, six hundred fifty-two thousand, three hundred thirty".