13880061845 has 16 divisors (see below), whose sum is σ = 17959883760. Its totient is φ = 10236993024.

The previous prime is 13880061841. The next prime is 13880061851. The reversal of 13880061845 is 54816008831.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4635409 + 13875426436 = 2153^2 + 117794^2 .

It is a cyclic number.

It is not a de Polignac number, because 13880061845 - 2² = 13880061841 is a prime.

It is a super-2 number, since 2×13880061845² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13880061796 and 13880061805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13880061841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82160 + ... + 185769.

It is an arithmetic number, because the mean of its divisors is an integer number (1122492735).

Almost surely, 2^13880061845 is an apocalyptic number.

It is an amenable number.

13880061845 is a deficient number, since it is larger than the sum of its proper divisors (4079821915).

13880061845 is a wasteful number, since it uses less digits than its factorization.

13880061845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268744.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 13880061845 in words is "thirteen billion, eight hundred eighty million, sixty-one thousand, eight hundred forty-five".