70976813821 has 16 divisors (see below), whose sum is σ = 74693654784. Its totient is φ = 67313752704.

The previous prime is 70976813819. The next prime is 70976813837. The reversal of 70976813821 is 12831867907.

It is a cyclic number.

It is not a de Polignac number, because 70976813821 - 2¹ = 70976813819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70976813881) 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, 2674600 + ... + 2701006.

It is an arithmetic number, because the mean of its divisors is an integer number (4668353424).

Almost surely, 2^70976813821 is an apocalyptic number.

It is an amenable number.

70976813821 is a deficient number, since it is larger than the sum of its proper divisors (3716840963).

70976813821 is a wasteful number, since it uses less digits than its factorization.

70976813821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27420.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 70976813821 in words is "seventy billion, nine hundred seventy-six million, eight hundred thirteen thousand, eight hundred twenty-one".