135568972351 has 8 divisors (see below), whose sum is σ = 135739796544. Its totient is φ = 135398215680.

The previous prime is 135568972277. The next prime is 135568972373. The reversal of 135568972351 is 153279865531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135568972351 - 2³¹ = 133421488703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135568972292 and 135568972301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135568976351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4864266 + ... + 4892056.

It is an arithmetic number, because the mean of its divisors is an integer number (16967474568).

Almost surely, 2^135568972351 is an apocalyptic number.

135568972351 is a deficient number, since it is larger than the sum of its proper divisors (170824193).

135568972351 is an equidigital number, since it uses as much as digits as its factorization.

135568972351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33761.

The product of its digits is 6804000, while the sum is 55.

The spelling of 135568972351 in words is "one hundred thirty-five billion, five hundred sixty-eight million, nine hundred seventy-two thousand, three hundred fifty-one".