15428201101 has 4 divisors (see below), whose sum is σ = 15428677500. Its totient is φ = 15427724704.

The previous prime is 15428201093. The next prime is 15428201123. The reversal of 15428201101 is 10110282451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10110282451 = 19 ⋅532120129.

It can be written as a sum of positive squares in 2 ways, for example, as 4549502500 + 10878698601 = 67450^2 + 104301^2 .

It is a cyclic number.

It is not a de Polignac number, because 15428201101 - 2³ = 15428201093 is a prime.

It is a super-2 number, since 2×15428201101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15428201501) 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, 185776 + ... + 255673.

It is an arithmetic number, because the mean of its divisors is an integer number (3857169375).

Almost surely, 2^15428201101 is an apocalyptic number.

It is an amenable number.

15428201101 is a deficient number, since it is larger than the sum of its proper divisors (476399).

15428201101 is an equidigital number, since it uses as much as digits as its factorization.

15428201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476398.

The product of its (nonzero) digits is 640, while the sum is 25.

Adding to 15428201101 its reverse (10110282451), we get a palindrome (25538483552).

The spelling of 15428201101 in words is "fifteen billion, four hundred twenty-eight million, two hundred one thousand, one hundred one".