6471920407 has 2 divisors, whose sum is σ = 6471920408. Its totient is φ = 6471920406.

The previous prime is 6471920363. The next prime is 6471920431. The reversal of 6471920407 is 7040291746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6471920407 - 2¹⁹ = 6471396119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6471920407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6471920447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235960203 + 3235960204.

It is an arithmetic number, because the mean of its divisors is an integer number (3235960204).

Almost surely, 2^6471920407 is an apocalyptic number.

6471920407 is a deficient number, since it is larger than the sum of its proper divisors (1).

6471920407 is an equidigital number, since it uses as much as digits as its factorization.

6471920407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 6471920407 is about 80448.2467615050. The cubic root of 6471920407 is about 1863.5643302583.

The spelling of 6471920407 in words is "six billion, four hundred seventy-one million, nine hundred twenty thousand, four hundred seven".