70171889451677 has 16 divisors (see below), whose sum is σ = 76868004024000. Its totient is φ = 63661741129344.

The previous prime is 70171889451649. The next prime is 70171889451761. The reversal of 70171889451677 is 77615498817107.

It is a cyclic number.

It is not a de Polignac number, because 70171889451677 - 2¹² = 70171889447581 is a prime.

It is a super-2 number, since 2×70171889451677² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70171889451677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70171889951677) 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, 6993527 + ... + 13756932.

It is an arithmetic number, because the mean of its divisors is an integer number (4804250251500).

Almost surely, 2^{70171889451677} is an apocalyptic number.

It is an amenable number.

70171889451677 is a deficient number, since it is larger than the sum of its proper divisors (6696114572323).

70171889451677 is a wasteful number, since it uses less digits than its factorization.

70171889451677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20754940.

The product of its (nonzero) digits is 165957120, while the sum is 71.

The spelling of 70171889451677 in words is "seventy trillion, one hundred seventy-one billion, eight hundred eighty-nine million, four hundred fifty-one thousand, six hundred seventy-seven".