20836239377877 has 384 divisors, whose sum is σ = 41526806630400. Its totient is φ = 10076996160000.

The previous prime is 20836239377869. The next prime is 20836239377959. The reversal of 20836239377877 is 77877393263802.

20836239377877 is a `hidden beast` number, since 20 + 83 + 6 + 2 + 393 + 7 + 78 + 77 = 666.

It is not a de Polignac number, because 20836239377877 - 2³ = 20836239377869 is a prime.

It is a super-2 number, since 2×20836239377877² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20836239377677) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 20407677627 + ... + 20407678647.

It is an arithmetic number, because the mean of its divisors is an integer number (108142725600).

Almost surely, 2^{20836239377877} is an apocalyptic number.

20836239377877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20836239377877 is a deficient number, since it is larger than the sum of its proper divisors (20690567252523).

20836239377877 is a wasteful number, since it uses less digits than its factorization.

20836239377877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 896168448, while the sum is 72.

The spelling of 20836239377877 in words is "twenty trillion, eight hundred thirty-six billion, two hundred thirty-nine million, three hundred seventy-seven thousand, eight hundred seventy-seven".