670000399951 has 2 divisors, whose sum is σ = 670000399952. Its totient is φ = 670000399950.

The previous prime is 670000399949. The next prime is 670000399963. The reversal of 670000399951 is 159993000076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670000399951 - 2¹ = 670000399949 is a prime.

Together with 670000399949, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 670000399895 and 670000399904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670000399931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335000199975 + 335000199976.

It is an arithmetic number, because the mean of its divisors is an integer number (335000199976).

Almost surely, 2^670000399951 is an apocalyptic number.

670000399951 is a deficient number, since it is larger than the sum of its proper divisors (1).

670000399951 is an equidigital number, since it uses as much as digits as its factorization.

670000399951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 459270, while the sum is 49.

The spelling of 670000399951 in words is "six hundred seventy billion, three hundred ninety-nine thousand, nine hundred fifty-one".