70811919135 has 24 divisors (see below), whose sum is σ = 126973098720. Its totient is φ = 36464068032.

The previous prime is 70811919089. The next prime is 70811919137. The reversal of 70811919135 is 53191911807.

It is a happy number.

It is not a de Polignac number, because 70811919135 - 2¹⁷ = 70811788063 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27129699 + ... + 27132308.

It is an arithmetic number, because the mean of its divisors is an integer number (5290545780).

Almost surely, 2^70811919135 is an apocalyptic number.

70811919135 is a deficient number, since it is larger than the sum of its proper divisors (56161179585).

70811919135 is a wasteful number, since it uses less digits than its factorization.

70811919135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54262047 (or 54262044 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 45.

The spelling of 70811919135 in words is "seventy billion, eight hundred eleven million, nine hundred nineteen thousand, one hundred thirty-five".