20848634994 has 32 divisors (see below), whose sum is σ = 45498242304. Its totient is φ = 6316336080.

The previous prime is 20848634971. The next prime is 20848635091. The reversal of 20848634994 is 49943684802.

It is a super-2 number, since 2×20848634994² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278277 + ... + 345159.

It is an arithmetic number, because the mean of its divisors is an integer number (1421820072).

Almost surely, 2^20848634994 is an apocalyptic number.

20848634994 is an abundant number, since it is smaller than the sum of its proper divisors (24649607310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20848634994 is a wasteful number, since it uses less digits than its factorization.

20848634994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71622.

The product of its (nonzero) digits is 11943936, while the sum is 57.

The spelling of 20848634994 in words is "twenty billion, eight hundred forty-eight million, six hundred thirty-four thousand, nine hundred ninety-four".