133115242451 has 12 divisors (see below), whose sum is σ = 140915990880. Its totient is φ = 125715841680.

The previous prime is 133115242441. The next prime is 133115242499. The reversal of 133115242451 is 154242511331.

It is not a de Polignac number, because 133115242451 - 2³⁰ = 132041500627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133115242411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1550840 + ... + 1634421.

It is an arithmetic number, because the mean of its divisors is an integer number (11742999240).

Almost surely, 2^133115242451 is an apocalyptic number.

133115242451 is a deficient number, since it is larger than the sum of its proper divisors (7800748429).

133115242451 is an equidigital number, since it uses as much as digits as its factorization.

133115242451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185386 (or 3185363 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

Adding to 133115242451 its reverse (154242511331), we get a palindrome (287357753782).

The spelling of 133115242451 in words is "one hundred thirty-three billion, one hundred fifteen million, two hundred forty-two thousand, four hundred fifty-one".