1598923145550 has 96 divisors (see below), whose sum is σ = 4001295052512. Its totient is φ = 422513889280.

The previous prime is 1598923145539. The next prime is 1598923145551. The reversal of 1598923145550 is 555413298951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1598923145551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116219272 + ... + 116233028.

It is an arithmetic number, because the mean of its divisors is an integer number (41680156797).

Almost surely, 2^{1598923145550} is an apocalyptic number.

1598923145550 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 1598923145550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2000647526256).

1598923145550 is an abundant number, since it is smaller than the sum of its proper divisors (2402371906962).

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

1598923145550 is a wasteful number, since it uses less digits than its factorization.

1598923145550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20742 (or 20737 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 57.

The spelling of 1598923145550 in words is "one trillion, five hundred ninety-eight billion, nine hundred twenty-three million, one hundred forty-five thousand, five hundred fifty".