70191533819 has 4 divisors (see below), whose sum is σ = 76572582360. Its totient is φ = 63810485280.

The previous prime is 70191533813. The next prime is 70191533827. The reversal of 70191533819 is 91833519107.

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 70191533819 - 2²⁰ = 70190485243 is a prime.

It is a super-2 number, since 2×70191533819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70191533813) 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, 3190524254 + ... + 3190524275.

It is an arithmetic number, because the mean of its divisors is an integer number (19143145590).

Almost surely, 2^70191533819 is an apocalyptic number.

70191533819 is a deficient number, since it is larger than the sum of its proper divisors (6381048541).

70191533819 is a wasteful number, since it uses less digits than its factorization.

70191533819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381048540.

The product of its (nonzero) digits is 204120, while the sum is 47.

The spelling of 70191533819 in words is "seventy billion, one hundred ninety-one million, five hundred thirty-three thousand, eight hundred nineteen".