13120143023550 has 48 divisors (see below), whose sum is σ = 33659953147440. Its totient is φ = 3378059811840.

The previous prime is 13120143023549. The next prime is 13120143023567. The reversal of 13120143023550 is 5532034102131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1508058067 + ... + 1508066766.

It is an arithmetic number, because the mean of its divisors is an integer number (701249023905).

Almost surely, 2^{13120143023550} is an apocalyptic number.

13120143023550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13120143023550 is an abundant number, since it is smaller than the sum of its proper divisors (20539810123890).

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

13120143023550 is a wasteful number, since it uses less digits than its factorization.

13120143023550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016124877 (or 3016124872 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 13120143023550 its reverse (5532034102131), we get a palindrome (18652177125681).

The spelling of 13120143023550 in words is "thirteen trillion, one hundred twenty billion, one hundred forty-three million, twenty-three thousand, five hundred fifty".