13120315533550 has 48 divisors (see below), whose sum is σ = 25090285636800. Its totient is φ = 5101990904960.

The previous prime is 13120315533539. The next prime is 13120315533719. The reversal of 13120315533550 is 5533551302131.

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, 18385129 + ... + 19085428.

It is an arithmetic number, because the mean of its divisors is an integer number (522714284100).

Almost surely, 2^{13120315533550} is an apocalyptic number.

13120315533550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13120315533550 is a deficient number, since it is larger than the sum of its proper divisors (11969970103250).

13120315533550 is a wasteful number, since it uses less digits than its factorization.

13120315533550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37470765 (or 37470760 counting only the distinct ones).

The product of its (nonzero) digits is 101250, while the sum is 37.

Adding to 13120315533550 its reverse (5533551302131), we get a palindrome (18653866835681).

The spelling of 13120315533550 in words is "thirteen trillion, one hundred twenty billion, three hundred fifteen million, five hundred thirty-three thousand, five hundred fifty".