70520738555 has 4 divisors (see below), whose sum is σ = 84624886272. Its totient is φ = 56416590840.

The previous prime is 70520738539. The next prime is 70520738581. The reversal of 70520738555 is 55583702507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55583702507 = 130649 ⋅425443.

It is not a de Polignac number, because 70520738555 - 2⁴ = 70520738539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7052073851 + ... + 7052073860.

It is an arithmetic number, because the mean of its divisors is an integer number (21156221568).

Almost surely, 2^70520738555 is an apocalyptic number.

70520738555 is a deficient number, since it is larger than the sum of its proper divisors (14104147717).

70520738555 is a wasteful number, since it uses less digits than its factorization.

70520738555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104147716.

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 70520738555 in words is "seventy billion, five hundred twenty million, seven hundred thirty-eight thousand, five hundred fifty-five".