20876278379949 has 12 divisors (see below), whose sum is σ = 30155105167200. Its totient is φ = 13917296993544.

The previous prime is 20876278379933. The next prime is 20876278380103. The reversal of 20876278379949 is 94997387267802.

20876278379949 is a `hidden beast` number, since 2 + 0 + 87 + 62 + 78 + 379 + 9 + 49 = 666.

It is not a de Polignac number, because 20876278379949 - 2⁴ = 20876278379933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20876278179949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17897089 + ... + 19027830.

It is an arithmetic number, because the mean of its divisors is an integer number (2512925430600).

Almost surely, 2^{20876278379949} is an apocalyptic number.

It is an amenable number.

20876278379949 is a deficient number, since it is larger than the sum of its proper divisors (9278826787251).

20876278379949 is a wasteful number, since it uses less digits than its factorization.

20876278379949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36987744 (or 36987741 counting only the distinct ones).

The product of its (nonzero) digits is 4608866304, while the sum is 81.

The spelling of 20876278379949 in words is "twenty trillion, eight hundred seventy-six billion, two hundred seventy-eight million, three hundred seventy-nine thousand, nine hundred forty-nine".