670205551057 has 4 divisors (see below), whose sum is σ = 765949201216. Its totient is φ = 574461900900.

The previous prime is 670205551003. The next prime is 670205551069. The reversal of 670205551057 is 750155502076.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 670205551057 - 2²⁷ = 670071333329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670205581057) 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, 47871825069 + ... + 47871825082.

It is an arithmetic number, because the mean of its divisors is an integer number (191487300304).

Almost surely, 2^670205551057 is an apocalyptic number.

It is an amenable number.

670205551057 is a deficient number, since it is larger than the sum of its proper divisors (95743650159).

670205551057 is an equidigital number, since it uses as much as digits as its factorization.

670205551057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95743650158.

The product of its (nonzero) digits is 367500, while the sum is 43.

The spelling of 670205551057 in words is "six hundred seventy billion, two hundred five million, five hundred fifty-one thousand, fifty-seven".