1285703400455 has 4 divisors (see below), whose sum is σ = 1542844080552. Its totient is φ = 1028562720360.

The previous prime is 1285703400451. The next prime is 1285703400467. The reversal of 1285703400455 is 5540043075821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1285703400455 - 2² = 1285703400451 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 (1285703400451) 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, 128570340041 + ... + 128570340050.

It is an arithmetic number, because the mean of its divisors is an integer number (385711020138).

Almost surely, 2^{1285703400455} is an apocalyptic number.

1285703400455 is a deficient number, since it is larger than the sum of its proper divisors (257140680097).

1285703400455 is an equidigital number, since it uses as much as digits as its factorization.

1285703400455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257140680096.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 1285703400455 in words is "one trillion, two hundred eighty-five billion, seven hundred three million, four hundred thousand, four hundred fifty-five".