894115521655 has 4 divisors (see below), whose sum is σ = 1072938625992. Its totient is φ = 715292417320.

The previous prime is 894115521599. The next prime is 894115521667. The reversal of 894115521655 is 556125511498.

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

It is not a de Polignac number, because 894115521655 - 2¹⁵ = 894115488887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89411552161 + ... + 89411552170.

It is an arithmetic number, because the mean of its divisors is an integer number (268234656498).

Almost surely, 2^894115521655 is an apocalyptic number.

894115521655 is a deficient number, since it is larger than the sum of its proper divisors (178823104337).

894115521655 is a wasteful number, since it uses less digits than its factorization.

894115521655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178823104336.

The product of its digits is 2160000, while the sum is 52.

The spelling of 894115521655 in words is "eight hundred ninety-four billion, one hundred fifteen million, five hundred twenty-one thousand, six hundred fifty-five".