855303913501 has 4 divisors (see below), whose sum is σ = 876164984604. Its totient is φ = 834442842400.

The previous prime is 855303913463. The next prime is 855303913523. The reversal of 855303913501 is 105319303558.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41564607876 + 813739305625 = 203874^2 + 902075^2 .

It is a cyclic number.

It is not a de Polignac number, because 855303913501 - 2¹⁷ = 855303782429 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 (855303913201) 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, 10430535490 + ... + 10430535571.

It is an arithmetic number, because the mean of its divisors is an integer number (219041246151).

Almost surely, 2^855303913501 is an apocalyptic number.

It is an amenable number.

855303913501 is a deficient number, since it is larger than the sum of its proper divisors (20861071103).

855303913501 is a wasteful number, since it uses less digits than its factorization.

855303913501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20861071102.

The product of its (nonzero) digits is 243000, while the sum is 43.

The spelling of 855303913501 in words is "eight hundred fifty-five billion, three hundred three million, nine hundred thirteen thousand, five hundred one".