13661122002 has 32 divisors (see below), whose sum is σ = 29865888000. Its totient is φ = 4131427920.

The previous prime is 13661121997. The next prime is 13661122073. The reversal of 13661122002 is 20022116631.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174468 + ... + 240335.

It is an arithmetic number, because the mean of its divisors is an integer number (933309000).

Almost surely, 2^13661122002 is an apocalyptic number.

13661122002 is an abundant number, since it is smaller than the sum of its proper divisors (16204765998).

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

13661122002 is a wasteful number, since it uses less digits than its factorization.

13661122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415318.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13661122002 its reverse (20022116631), we get a palindrome (33683238633).

The spelling of 13661122002 in words is "thirteen billion, six hundred sixty-one million, one hundred twenty-two thousand, two".