133520205451 has 8 divisors (see below), whose sum is σ = 136680682160. Its totient is φ = 130362244992.

The previous prime is 133520205449. The next prime is 133520205463. The reversal of 133520205451 is 154502025331.

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 133520205451 - 2¹ = 133520205449 is a prime.

It is a super-2 number, since 2×133520205451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133520205491) 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, 521466 + ... + 734143.

It is an arithmetic number, because the mean of its divisors is an integer number (17085085270).

Almost surely, 2^133520205451 is an apocalyptic number.

133520205451 is a deficient number, since it is larger than the sum of its proper divisors (3160476709).

133520205451 is a wasteful number, since it uses less digits than its factorization.

133520205451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258125.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 133520205451 in words is "one hundred thirty-three billion, five hundred twenty million, two hundred five thousand, four hundred fifty-one".