1428715157865 has 32 divisors (see below), whose sum is σ = 2323590554496. Its totient is φ = 749434498560.

The previous prime is 1428715157851. The next prime is 1428715157869. The reversal of 1428715157865 is 5687515178241.

It is not a de Polignac number, because 1428715157865 - 2¹² = 1428715153769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1428715157799 and 1428715157808.

It is not an unprimeable number, because it can be changed into a prime (1428715157869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14263437 + ... + 14363253.

It is an arithmetic number, because the mean of its divisors is an integer number (72612204828).

Almost surely, 2^{1428715157865} is an apocalyptic number.

1428715157865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1428715157865 is a deficient number, since it is larger than the sum of its proper divisors (894875396631).

1428715157865 is a wasteful number, since it uses less digits than its factorization.

1428715157865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115529.

The product of its digits is 18816000, while the sum is 60.

The spelling of 1428715157865 in words is "one trillion, four hundred twenty-eight billion, seven hundred fifteen million, one hundred fifty-seven thousand, eight hundred sixty-five".