20828653154739 has 12 divisors (see below), whose sum is σ = 31669297194600. Its totient is φ = 13154938834464.

The previous prime is 20828653154717. The next prime is 20828653154747. The reversal of 20828653154739 is 93745135682802.

20828653154739 is a `hidden beast` number, since 2 + 0 + 8 + 2 + 8 + 6 + 53 + 1 + 547 + 39 = 666.

It is not a de Polignac number, because 20828653154739 - 2¹¹ = 20828653152691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20828653154779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60902494434 + ... + 60902494775.

It is an arithmetic number, because the mean of its divisors is an integer number (2639108099550).

It is a 1-persistent number, because it is pandigital, but 2⋅20828653154739 = 41657306309478 is not.

Almost surely, 2^{20828653154739} is an apocalyptic number.

20828653154739 is a deficient number, since it is larger than the sum of its proper divisors (10840644039861).

20828653154739 is a wasteful number, since it uses less digits than its factorization.

20828653154739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121804989234 (or 121804989231 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

It can be divided in two parts, 208286 and 53154739, that added together give a square (53363025 = 7305²).

The spelling of 20828653154739 in words is "twenty trillion, eight hundred twenty-eight billion, six hundred fifty-three million, one hundred fifty-four thousand, seven hundred thirty-nine".