133761971389 has 2 divisors, whose sum is σ = 133761971390. Its totient is φ = 133761971388.

The previous prime is 133761971303. The next prime is 133761971443. The reversal of 133761971389 is 983179167331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132386822500 + 1375148889 = 363850^2 + 37083^2 .

It is a cyclic number.

It is not a de Polignac number, because 133761971389 - 2¹³ = 133761963197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133761971789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66880985694 + 66880985695.

It is an arithmetic number, because the mean of its divisors is an integer number (66880985695).

Almost surely, 2^133761971389 is an apocalyptic number.

It is an amenable number.

133761971389 is a deficient number, since it is larger than the sum of its proper divisors (1).

133761971389 is an equidigital number, since it uses as much as digits as its factorization.

133761971389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 58.

The spelling of 133761971389 in words is "one hundred thirty-three billion, seven hundred sixty-one million, nine hundred seventy-one thousand, three hundred eighty-nine".