13023656104545 has 48 divisors (see below), whose sum is σ = 22587662719440. Its totient is φ = 6941851103232.

The previous prime is 13023656104463. The next prime is 13023656104549. The reversal of 13023656104545 is 54540165632031.

It is a happy number.

13023656104545 is a `hidden beast` number, since 1 + 3 + 0 + 2 + 3 + 6 + 561 + 0 + 45 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 4222988010081 + 8800668094464 = 2054991^2 + 2966592^2 .

It is not a de Polignac number, because 13023656104545 - 2¹¹ = 13023656102497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13023656104545.

It is not an unprimeable number, because it can be changed into a prime (13023656104549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 661190137 + ... + 661209833.

It is an arithmetic number, because the mean of its divisors is an integer number (470576306655).

Almost surely, 2^{13023656104545} is an apocalyptic number.

13023656104545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13023656104545 is a deficient number, since it is larger than the sum of its proper divisors (9564006614895).

13023656104545 is a wasteful number, since it uses less digits than its factorization.

13023656104545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27634 (or 27631 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 13023656104545 in words is "thirteen trillion, twenty-three billion, six hundred fifty-six million, one hundred four thousand, five hundred forty-five".