70440813777 has 8 divisors (see below), whose sum is σ = 99445854816. Its totient is φ = 44198157632.

The previous prime is 70440813767. The next prime is 70440813797. The reversal of 70440813777 is 77731804407.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 70440813777 - 2⁴ = 70440813761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70440813767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690596163 + ... + 690596264.

It is an arithmetic number, because the mean of its divisors is an integer number (12430731852).

Almost surely, 2^70440813777 is an apocalyptic number.

It is an amenable number.

70440813777 is a deficient number, since it is larger than the sum of its proper divisors (29005041039).

70440813777 is a wasteful number, since it uses less digits than its factorization.

70440813777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381192447.

The product of its (nonzero) digits is 921984, while the sum is 48.

The spelling of 70440813777 in words is "seventy billion, four hundred forty million, eight hundred thirteen thousand, seven hundred seventy-seven".