20212647862 has 36 divisors (see below), whose sum is σ = 35155008396. Its totient is φ = 8642272320.

The previous prime is 20212647841. The next prime is 20212647877. The reversal of 20212647862 is 26874621202.

It is a super-2 number, since 2×20212647862² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11335423 + ... + 11337205.

It is an arithmetic number, because the mean of its divisors is an integer number (976528011).

Almost surely, 2^20212647862 is an apocalyptic number.

20212647862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20212647862 is a deficient number, since it is larger than the sum of its proper divisors (14942360534).

20212647862 is an equidigital number, since it uses as much as digits as its factorization.

20212647862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 20212647862 in words is "twenty billion, two hundred twelve million, six hundred forty-seven thousand, eight hundred sixty-two".