213622137837 has 8 divisors (see below), whose sum is σ = 316477241280. Its totient is φ = 142414758540.

The previous prime is 213622137829. The next prime is 213622137863. The reversal of 213622137837 is 738731226312.

It is a happy number.

213622137837 is a `hidden beast` number, since 2 + 1 + 3 + 622 + 13 + 7 + 8 + 3 + 7 = 666.

It is not a de Polignac number, because 213622137837 - 2³ = 213622137829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213622137792 and 213622137801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213622127837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3955965489 + ... + 3955965542.

It is an arithmetic number, because the mean of its divisors is an integer number (39559655160).

Almost surely, 2^213622137837 is an apocalyptic number.

213622137837 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

213622137837 is a deficient number, since it is larger than the sum of its proper divisors (102855103443).

213622137837 is an equidigital number, since it uses as much as digits as its factorization.

213622137837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911931040 (or 7911931034 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 213622137837 in words is "two hundred thirteen billion, six hundred twenty-two million, one hundred thirty-seven thousand, eight hundred thirty-seven".