70218822457 has 24 divisors (see below), whose sum is σ = 83265450432. Its totient is φ = 59200016400.

The previous prime is 70218822449. The next prime is 70218822467. The reversal of 70218822457 is 75422881207.

It is a happy number.

It is not a de Polignac number, because 70218822457 - 2³ = 70218822449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70218822467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990982 + ... + 1059472.

It is an arithmetic number, because the mean of its divisors is an integer number (3469393768).

Almost surely, 2^70218822457 is an apocalyptic number.

It is an amenable number.

70218822457 is a deficient number, since it is larger than the sum of its proper divisors (13046627975).

70218822457 is an frugal number, since it uses more digits than its factorization.

70218822457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68587 (or 68559 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 70218822457 in words is "seventy billion, two hundred eighteen million, eight hundred twenty-two thousand, four hundred fifty-seven".