9855761357 has 4 divisors (see below), whose sum is σ = 10613896860. Its totient is φ = 9097625856.

The previous prime is 9855761347. The next prime is 9855761359. The reversal of 9855761357 is 7531675589.

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 1411805476 + 8443955881 = 37574^2 + 91891^2 .

It is a cyclic number.

It is not a de Polignac number, because 9855761357 - 2²⁸ = 9587325901 is a prime.

It is a super-2 number, since 2×9855761357² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9855761359) 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, 379067732 + ... + 379067757.

It is an arithmetic number, because the mean of its divisors is an integer number (2653474215).

Almost surely, 2^9855761357 is an apocalyptic number.

It is an amenable number.

9855761357 is a deficient number, since it is larger than the sum of its proper divisors (758135503).

9855761357 is a wasteful number, since it uses less digits than its factorization.

9855761357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758135502.

The product of its digits is 7938000, while the sum is 56.

The square root of 9855761357 is about 99276.1872605913. The cubic root of 9855761357 is about 2144.0260596963.

The spelling of 9855761357 in words is "nine billion, eight hundred fifty-five million, seven hundred sixty-one thousand, three hundred fifty-seven".