13001402052 has 36 divisors (see below), whose sum is σ = 34797871836. Its totient is φ = 4078871040.

The previous prime is 13001402039. The next prime is 13001402083. The reversal of 13001402052 is 25020410031.

It can be written as a sum of positive squares in 2 ways, for example, as 7120659456 + 5880742596 = 84384^2 + 76686^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10621449 + ... + 10622672.

It is an arithmetic number, because the mean of its divisors is an integer number (966607551).

Almost surely, 2^13001402052 is an apocalyptic number.

13001402052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13001402052 is an abundant number, since it is smaller than the sum of its proper divisors (21796469784).

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

13001402052 is a wasteful number, since it uses less digits than its factorization.

13001402052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21244148 (or 21244143 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 13001402052 its reverse (25020410031), we get a palindrome (38021812083).

The spelling of 13001402052 in words is "thirteen billion, one million, four hundred two thousand, fifty-two".