70434840648787 has 4 divisors (see below), whose sum is σ = 70461092921560. Its totient is φ = 70408588376016.

The previous prime is 70434840648763. The next prime is 70434840648877. The reversal of 70434840648787 is 78784604843407.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70434840648787 is a prime.

It is a super-2 number, since 2×70434840648787² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70434840648737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13126132362 + ... + 13126137727.

It is an arithmetic number, because the mean of its divisors is an integer number (17615273230390).

Almost surely, 2^{70434840648787} is an apocalyptic number.

70434840648787 is a deficient number, since it is larger than the sum of its proper divisors (26252272773).

70434840648787 is a wasteful number, since it uses less digits than its factorization.

70434840648787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26252272772.

The product of its (nonzero) digits is 809238528, while the sum is 70.

The spelling of 70434840648787 in words is "seventy trillion, four hundred thirty-four billion, eight hundred forty million, six hundred forty-eight thousand, seven hundred eighty-seven".