857156550807 has 16 divisors (see below), whose sum is σ = 1160111979488. Its totient is φ = 562840773120.

The previous prime is 857156550779. The next prime is 857156550841. The reversal of 857156550807 is 708055651758.

It is not a de Polignac number, because 857156550807 - 2¹⁵ = 857156518039 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857156550907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509294 + ... + 2830347.

It is an arithmetic number, because the mean of its divisors is an integer number (72506998718).

Almost surely, 2^857156550807 is an apocalyptic number.

857156550807 is a deficient number, since it is larger than the sum of its proper divisors (302955428681).

857156550807 is a wasteful number, since it uses less digits than its factorization.

857156550807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340450.

The product of its (nonzero) digits is 11760000, while the sum is 57.

The spelling of 857156550807 in words is "eight hundred fifty-seven billion, one hundred fifty-six million, five hundred fifty thousand, eight hundred seven".