133537900637 has 2 divisors, whose sum is σ = 133537900638. Its totient is φ = 133537900636.

The previous prime is 133537900609. The next prime is 133537900649. The reversal of 133537900637 is 736009735331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124669723396 + 8868177241 = 353086^2 + 94171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133537900637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133537900591 and 133537900600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133537906637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66768950318 + 66768950319.

It is an arithmetic number, because the mean of its divisors is an integer number (66768950319).

Almost surely, 2^133537900637 is an apocalyptic number.

It is an amenable number.

133537900637 is a deficient number, since it is larger than the sum of its proper divisors (1).

133537900637 is an equidigital number, since it uses as much as digits as its factorization.

133537900637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1071630, while the sum is 47.

The spelling of 133537900637 in words is "one hundred thirty-three billion, five hundred thirty-seven million, nine hundred thousand, six hundred thirty-seven".