15451968813 has 8 divisors (see below), whose sum is σ = 21498391488. Its totient is φ = 9853429344.

The previous prime is 15451968811. The next prime is 15451968821. The reversal of 15451968813 is 31886915451.

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

It is not a de Polignac number, because 15451968813 - 2¹ = 15451968811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15451968811) 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, 111970720 + ... + 111970857.

It is an arithmetic number, because the mean of its divisors is an integer number (2687298936).

Almost surely, 2^15451968813 is an apocalyptic number.

It is an amenable number.

15451968813 is a deficient number, since it is larger than the sum of its proper divisors (6046422675).

15451968813 is a wasteful number, since it uses less digits than its factorization.

15451968813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223941603.

The product of its digits is 1036800, while the sum is 51.

The spelling of 15451968813 in words is "fifteen billion, four hundred fifty-one million, nine hundred sixty-eight thousand, eight hundred thirteen".