855503765365 has 16 divisors (see below), whose sum is σ = 1036095653376. Its totient is φ = 678104683200.

The previous prime is 855503765339. The next prime is 855503765423. The reversal of 855503765365 is 563567305558.

It is not a de Polignac number, because 855503765365 - 2⁹ = 855503764853 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 15 ways as a sum of consecutive naturals, for example, 1582906 + ... + 2053435.

It is an arithmetic number, because the mean of its divisors is an integer number (64755978336).

Almost surely, 2^855503765365 is an apocalyptic number.

It is an amenable number.

855503765365 is a deficient number, since it is larger than the sum of its proper divisors (180591888011).

855503765365 is a wasteful number, since it uses less digits than its factorization.

855503765365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636780.

The product of its (nonzero) digits is 56700000, while the sum is 58.

The spelling of 855503765365 in words is "eight hundred fifty-five billion, five hundred three million, seven hundred sixty-five thousand, three hundred sixty-five".