15420069841 has 4 divisors (see below), whose sum is σ = 16821894384. Its totient is φ = 14018245300.

The previous prime is 15420069829. The next prime is 15420069853. The reversal of 15420069841 is 14896002451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (15420069829) and next prime (15420069853).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15420069841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15420069794 and 15420069803.

It is not an unprimeable number, because it can be changed into a prime (15420069241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700912255 + ... + 700912276.

It is an arithmetic number, because the mean of its divisors is an integer number (4205473596).

Almost surely, 2^15420069841 is an apocalyptic number.

15420069841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15420069841 is a deficient number, since it is larger than the sum of its proper divisors (1401824543).

15420069841 is a wasteful number, since it uses less digits than its factorization.

15420069841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401824542.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 15420069841 in words is "fifteen billion, four hundred twenty million, sixty-nine thousand, eight hundred forty-one".