15420684853 has 8 divisors (see below), whose sum is σ = 18660324672. Its totient is φ = 12440216256.

The previous prime is 15420684847. The next prime is 15420684859. The reversal of 15420684853 is 35848602451.

It is an interprime number because it is at equal distance from previous prime (15420684847) and next prime (15420684859).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15420684853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420684859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64792675 + ... + 64792912.

It is an arithmetic number, because the mean of its divisors is an integer number (2332540584).

Almost surely, 2^15420684853 is an apocalyptic number.

It is an amenable number.

15420684853 is a deficient number, since it is larger than the sum of its proper divisors (3239639819).

15420684853 is a wasteful number, since it uses less digits than its factorization.

15420684853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129585611.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 15420684853 in words is "fifteen billion, four hundred twenty million, six hundred eighty-four thousand, eight hundred fifty-three".