70877071771 has 4 divisors (see below), whose sum is σ = 77320441944. Its totient is φ = 64433701600.

The previous prime is 70877071763. The next prime is 70877071787. The reversal of 70877071771 is 17717077807.

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

It is a cyclic number.

It is not a de Polignac number, because 70877071771 - 2³ = 70877071763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70877071711) 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, 3221685070 + ... + 3221685091.

It is an arithmetic number, because the mean of its divisors is an integer number (19330110486).

Almost surely, 2^70877071771 is an apocalyptic number.

70877071771 is a deficient number, since it is larger than the sum of its proper divisors (6443370173).

70877071771 is a wasteful number, since it uses less digits than its factorization.

70877071771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443370172.

The product of its (nonzero) digits is 941192, while the sum is 52.

The spelling of 70877071771 in words is "seventy billion, eight hundred seventy-seven million, seventy-one thousand, seven hundred seventy-one".