870672578012777 has 4 divisors (see below), whose sum is σ = 891908494549716. Its totient is φ = 849436661475840.

The previous prime is 870672578012693. The next prime is 870672578012803. The reversal of 870672578012777 is 777210875276078.

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 12458210285161 + 858214367727616 = 3529619^2 + 29295296^2 .

It is a cyclic number.

It is not a de Polignac number, because 870672578012777 - 2⁸ = 870672578012521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870672578012477) 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, 10617958268408 + ... + 10617958268489.

It is an arithmetic number, because the mean of its divisors is an integer number (222977123637429).

Almost surely, 2^{870672578012777} is an apocalyptic number.

It is an amenable number.

870672578012777 is a deficient number, since it is larger than the sum of its proper divisors (21235916536939).

870672578012777 is a wasteful number, since it uses less digits than its factorization.

870672578012777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21235916536938.

The product of its (nonzero) digits is 903544320, while the sum is 74.

The spelling of 870672578012777 in words is "eight hundred seventy trillion, six hundred seventy-two billion, five hundred seventy-eight million, twelve thousand, seven hundred seventy-seven".