20136023462745 has 12 divisors (see below), whose sum is σ = 34902440668836. Its totient is φ = 10739212513440.

The previous prime is 20136023462717. The next prime is 20136023462767. The reversal of 20136023462745 is 54726432063102.

20136023462745 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 602 + 34 + 6 + 2 + 7 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6818114767104 + 13317908695641 = 2611152^2 + 3649371^2 .

It is not a de Polignac number, because 20136023462745 - 2¹⁰ = 20136023461721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 447467188061 = 20136023462745 / (2 + 0 + 1 + 3 + 6 + 0 + 2 + 3 + 4 + 6 + 2 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 20136023462745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223733593986 + ... + 223733594075.

It is an arithmetic number, because the mean of its divisors is an integer number (2908536722403).

Almost surely, 2^{20136023462745} is an apocalyptic number.

It is an amenable number.

20136023462745 is a deficient number, since it is larger than the sum of its proper divisors (14766417206091).

20136023462745 is a wasteful number, since it uses less digits than its factorization.

20136023462745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447467188072 (or 447467188069 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 20136023462745 in words is "twenty trillion, one hundred thirty-six billion, twenty-three million, four hundred sixty-two thousand, seven hundred forty-five".