70091696787 has 64 divisors (see below), whose sum is σ = 117690531840. Its totient is φ = 36202723200.

The previous prime is 70091696767. The next prime is 70091696791. The reversal of 70091696787 is 78769619007.

It is a happy number.

It is not a de Polignac number, because 70091696787 - 2⁸ = 70091696531 is a prime.

It is a super-2 number, since 2×70091696787² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 70091696787.

It is not an unprimeable number, because it can be changed into a prime (70091696707) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 838293 + ... + 918105.

It is an arithmetic number, because the mean of its divisors is an integer number (1838914560).

Almost surely, 2^70091696787 is an apocalyptic number.

70091696787 is a deficient number, since it is larger than the sum of its proper divisors (47598835053).

70091696787 is a wasteful number, since it uses less digits than its factorization.

70091696787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79944.

The product of its (nonzero) digits is 8001504, while the sum is 60.

The spelling of 70091696787 in words is "seventy billion, ninety-one million, six hundred ninety-six thousand, seven hundred eighty-seven".