123561633000 has 128 divisors (see below), whose sum is σ = 415167217920. Its totient is φ = 30415161600.

The previous prime is 123561632983. The next prime is 123561633029. The reversal of 123561633000 is 336165321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1545124 + ... + 1623123.

It is an arithmetic number, because the mean of its divisors is an integer number (3243493890).

Almost surely, 2^123561633000 is an apocalyptic number.

123561633000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123561633000 is an abundant number, since it is smaller than the sum of its proper divisors (291605584920).

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

123561633000 is a wasteful number, since it uses less digits than its factorization.

123561633000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168284 (or 3168270 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 123561633000 its reverse (336165321), we get a palindrome (123897798321).

The spelling of 123561633000 in words is "one hundred twenty-three billion, five hundred sixty-one million, six hundred thirty-three thousand".