13155220802870 has 64 divisors (see below), whose sum is σ = 23956011368640. Its totient is φ = 5200995889152.

The previous prime is 13155220802827. The next prime is 13155220802879. The reversal of 13155220802870 is 7820802255131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155220802879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341169632 + ... + 341208188.

It is an arithmetic number, because the mean of its divisors is an integer number (374312677635).

Almost surely, 2^{13155220802870} is an apocalyptic number.

13155220802870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13155220802870 is a deficient number, since it is larger than the sum of its proper divisors (10800790565770).

13155220802870 is a wasteful number, since it uses less digits than its factorization.

13155220802870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39777.

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 13155220802870 in words is "thirteen trillion, one hundred fifty-five billion, two hundred twenty million, eight hundred two thousand, eight hundred seventy".