1555230664530 has 96 divisors (see below), whose sum is σ = 4066969046400. Its totient is φ = 412334461440.

The previous prime is 1555230664517. The next prime is 1555230664571. The reversal of 1555230664530 is 354660325551.

1555230664530 is a `hidden beast` number, since 1 + 5 + 5 + 52 + 3 + 0 + 6 + 64 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24343609 + ... + 24407411.

It is an arithmetic number, because the mean of its divisors is an integer number (42364260900).

Almost surely, 2^{1555230664530} is an apocalyptic number.

1555230664530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1555230664530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2033484523200).

1555230664530 is an abundant number, since it is smaller than the sum of its proper divisors (2511738381870).

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

1555230664530 is a wasteful number, since it uses less digits than its factorization.

1555230664530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65376 (or 65373 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 1555230664530 in words is "one trillion, five hundred fifty-five billion, two hundred thirty million, six hundred sixty-four thousand, five hundred thirty".