20102694237 has 64 divisors (see below), whose sum is σ = 31343616000. Its totient is φ = 12717057024.

The previous prime is 20102694233. The next prime is 20102694247. The reversal of 20102694237 is 73249620102.

20102694237 is a `hidden beast` number, since 201 + 0 + 26 + 9 + 423 + 7 = 666.

It is not a de Polignac number, because 20102694237 - 2² = 20102694233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102694233) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 11235939 + ... + 11237727.

It is an arithmetic number, because the mean of its divisors is an integer number (489744000).

Almost surely, 2^20102694237 is an apocalyptic number.

20102694237 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20102694237 is a deficient number, since it is larger than the sum of its proper divisors (11240921763).

20102694237 is a wasteful number, since it uses less digits than its factorization.

20102694237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067 (or 2061 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 20102694237 in words is "twenty billion, one hundred two million, six hundred ninety-four thousand, two hundred thirty-seven".