20850546877381 has 12 divisors (see below), whose sum is σ = 23852981233732. Its totient is φ = 18114502261248.

The previous prime is 20850546877373. The next prime is 20850546877397. The reversal of 20850546877381 is 18377864505802.

It can be written as a sum of positive squares in 6 ways, for example, as 137944645281 + 20712602232100 = 371409^2 + 4551110^2 .

It is not a de Polignac number, because 20850546877381 - 2³ = 20850546877373 is a prime.

It is a super-2 number, since 2×20850546877381² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850546872381) 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, 2774889360 + ... + 2774896873.

Almost surely, 2^{20850546877381} is an apocalyptic number.

It is an amenable number.

20850546877381 is a deficient number, since it is larger than the sum of its proper divisors (3002434356351).

20850546877381 is a wasteful number, since it uses less digits than its factorization.

20850546877381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549786280 (or 5549786263 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 64.

The spelling of 20850546877381 in words is "twenty trillion, eight hundred fifty billion, five hundred forty-six million, eight hundred seventy-seven thousand, three hundred eighty-one".