15427640280693 has 4 divisors (see below), whose sum is σ = 20570187040928. Its totient is φ = 10285093520460.

The previous prime is 15427640280667. The next prime is 15427640280697. The reversal of 15427640280693 is 39608204672451.

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 not a de Polignac number, because 15427640280693 - 2¹⁶ = 15427640215157 is a prime.

It is a super-2 number, since 2×15427640280693² (a number of 27 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 (15427640280697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571273380113 + ... + 2571273380118.

It is an arithmetic number, because the mean of its divisors is an integer number (5142546760232).

It is a 1-persistent number, because it is pandigital, but 2⋅15427640280693 = 30855280561386 is not.

Almost surely, 2^{15427640280693} is an apocalyptic number.

It is an amenable number.

15427640280693 is a deficient number, since it is larger than the sum of its proper divisors (5142546760235).

15427640280693 is an equidigital number, since it uses as much as digits as its factorization.

15427640280693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142546760234.

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 15427640280693 in words is "fifteen trillion, four hundred twenty-seven billion, six hundred forty million, two hundred eighty thousand, six hundred ninety-three".