133740020247 has 32 divisors (see below), whose sum is σ = 193082351616. Its totient is φ = 82126783200.

The previous prime is 133740020207. The next prime is 133740020251. The reversal of 133740020247 is 742020047331.

It is not a de Polignac number, because 133740020247 - 2¹⁰ = 133740019223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133740020207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106779 + ... + 528092.

It is an arithmetic number, because the mean of its divisors is an integer number (6033823488).

Almost surely, 2^133740020247 is an apocalyptic number.

133740020247 is a deficient number, since it is larger than the sum of its proper divisors (59342331369).

133740020247 is a wasteful number, since it uses less digits than its factorization.

133740020247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635011.

The product of its (nonzero) digits is 28224, while the sum is 33.

Adding to 133740020247 its reverse (742020047331), we get a palindrome (875760067578).

The spelling of 133740020247 in words is "one hundred thirty-three billion, seven hundred forty million, twenty thousand, two hundred forty-seven".