13662201312 has 120 divisors (see below), whose sum is σ = 40348721952. Its totient is φ = 4534963200.

The previous prime is 13662201277. The next prime is 13662201323. The reversal of 13662201312 is 21310226631.

13662201312 is a `hidden beast` number, since 1 + 3 + 6 + 622 + 0 + 1 + 31 + 2 = 666.

It is a super-2 number, since 2×13662201312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 613737 + ... + 635607.

Almost surely, 2^13662201312 is an apocalyptic number.

13662201312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13662201312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20174360976).

13662201312 is an abundant number, since it is smaller than the sum of its proper divisors (26686520640).

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

13662201312 is a wasteful number, since it uses less digits than its factorization.

13662201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22134 (or 22117 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 13662201312 its reverse (21310226631), we get a palindrome (34972427943).

The spelling of 13662201312 in words is "thirteen billion, six hundred sixty-two million, two hundred one thousand, three hundred twelve".