70811919157 has 8 divisors (see below), whose sum is σ = 81463855232. Its totient is φ = 60293970000.

The previous prime is 70811919137. The next prime is 70811919163. The reversal of 70811919157 is 75191911807.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70811919157 is a prime.

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 70811919157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70811919137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33495594 + ... + 33497707.

It is an arithmetic number, because the mean of its divisors is an integer number (10182981904).

Almost surely, 2^70811919157 is an apocalyptic number.

It is an amenable number.

70811919157 is a deficient number, since it is larger than the sum of its proper divisors (10651936075).

70811919157 is a wasteful number, since it uses less digits than its factorization.

70811919157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66993459.

The product of its (nonzero) digits is 158760, while the sum is 49.

The spelling of 70811919157 in words is "seventy billion, eight hundred eleven million, nine hundred nineteen thousand, one hundred fifty-seven".