70209097993 has 4 divisors (see below), whose sum is σ = 72106641220. Its totient is φ = 68311554768.

The previous prime is 70209097877. The next prime is 70209098021. The reversal of 70209097993 is 39979090207.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31788393849 + 38420704144 = 178293^2 + 196012^2 .

It is a cyclic number.

It is not a de Polignac number, because 70209097993 - 2¹³ = 70209089801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70209091993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948771558 + ... + 948771631.

It is an arithmetic number, because the mean of its divisors is an integer number (18026660305).

Almost surely, 2^70209097993 is an apocalyptic number.

It is an amenable number.

70209097993 is a deficient number, since it is larger than the sum of its proper divisors (1897543227).

70209097993 is a wasteful number, since it uses less digits than its factorization.

70209097993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897543226.

The product of its (nonzero) digits is 1928934, while the sum is 55.

The spelling of 70209097993 in words is "seventy billion, two hundred nine million, ninety-seven thousand, nine hundred ninety-three".