13105555545 has 16 divisors (see below), whose sum is σ = 20972787840. Its totient is φ = 6988329984.

The previous prime is 13105555543. The next prime is 13105555559. The reversal of 13105555545 is 54555550131.

It is not a de Polignac number, because 13105555545 - 2¹ = 13105555543 is a prime.

It is a super-2 number, since 2×13105555545² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13105555543) 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, 5092 + ... + 161978.

It is an arithmetic number, because the mean of its divisors is an integer number (1310799240).

Almost surely, 2^13105555545 is an apocalyptic number.

13105555545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13105555545 is a deficient number, since it is larger than the sum of its proper divisors (7867232295).

13105555545 is a wasteful number, since it uses less digits than its factorization.

13105555545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162464.

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 13105555545 in words is "thirteen billion, one hundred five million, five hundred fifty-five thousand, five hundred forty-five".