20155335451 has 8 divisors (see below), whose sum is σ = 21245101520. Its totient is φ = 19068465312.

The previous prime is 20155335449. The next prime is 20155335457. The reversal of 20155335451 is 15453355102.

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 20155335451 - 2¹ = 20155335449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20155335457) 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, 709680 + ... + 737533.

It is an arithmetic number, because the mean of its divisors is an integer number (2655637690).

Almost surely, 2^20155335451 is an apocalyptic number.

20155335451 is a deficient number, since it is larger than the sum of its proper divisors (1089766069).

20155335451 is a wasteful number, since it uses less digits than its factorization.

20155335451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447965.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 20155335451 in words is "twenty billion, one hundred fifty-five million, three hundred thirty-five thousand, four hundred fifty-one".