13405142052 has 18 divisors (see below), whose sum is σ = 33885220278. Its totient is φ = 4468380672.

The previous prime is 13405142041. The next prime is 13405142053. The reversal of 13405142052 is 25024150431.

It can be written as a sum of positive squares in only one way, i.e., 11356312356 + 2048829696 = 106566^2 + 45264^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (13405142053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186182493 + ... + 186182564.

Almost surely, 2^13405142052 is an apocalyptic number.

13405142052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13405142052 is an abundant number, since it is smaller than the sum of its proper divisors (20480078226).

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

13405142052 is a wasteful number, since it uses less digits than its factorization.

13405142052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372365067 (or 372365062 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 13405142052 its reverse (25024150431), we get a palindrome (38429292483).

The spelling of 13405142052 in words is "thirteen billion, four hundred five million, one hundred forty-two thousand, fifty-two".