20032243263657 has 16 divisors (see below), whose sum is σ = 29677481930880. Its totient is φ = 13354790816016.

The previous prime is 20032243263653. The next prime is 20032243263661. The reversal of 20032243263657 is 75636234223002.

20032243263657 is a `hidden beast` number, since 2 + 0 + 0 + 3 + 2 + 2 + 4 + 3 + 2 + 636 + 5 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (20032243263653) and next prime (20032243263661).

It is not a de Polignac number, because 20032243263657 - 2² = 20032243263653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20032243263653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11178103 + ... + 12845795.

It is an arithmetic number, because the mean of its divisors is an integer number (1854842620680).

Almost surely, 2^{20032243263657} is an apocalyptic number.

20032243263657 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20032243263657 is a deficient number, since it is larger than the sum of its proper divisors (9645238667223).

20032243263657 is a wasteful number, since it uses less digits than its factorization.

20032243263657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112589 (or 2112583 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 45.

Adding to 20032243263657 its reverse (75636234223002), we get a palindrome (95668477486659).

The spelling of 20032243263657 in words is "twenty trillion, thirty-two billion, two hundred forty-three million, two hundred sixty-three thousand, six hundred fifty-seven".