20694962220 has 24 divisors (see below), whose sum is σ = 57945894384. Its totient is φ = 5518656576.

The previous prime is 20694962219. The next prime is 20694962221. The reversal of 20694962220 is 2226949602.

It is an interprime number because it is at equal distance from previous prime (20694962219) and next prime (20694962221).

It is a super-2 number, since 2×20694962220² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20694962221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172457959 + ... + 172458078.

It is an arithmetic number, because the mean of its divisors is an integer number (2414412266).

Almost surely, 2^20694962220 is an apocalyptic number.

20694962220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20694962220 is an abundant number, since it is smaller than the sum of its proper divisors (37250932164).

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

20694962220 is a wasteful number, since it uses less digits than its factorization.

20694962220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344916049 (or 344916047 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 20694962220 in words is "twenty billion, six hundred ninety-four million, nine hundred sixty-two thousand, two hundred twenty".