407506621913 has 2 divisors, whose sum is σ = 407506621914. Its totient is φ = 407506621912.

The previous prime is 407506621889. The next prime is 407506621919. The reversal of 407506621913 is 319126605704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406529934409 + 976687504 = 637597^2 + 31252^2 .

It is a cyclic number.

It is not a de Polignac number, because 407506621913 - 2²⁰ = 407505573337 is a prime.

It is not a weakly prime, because it can be changed into another prime (407506621919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203753310956 + 203753310957.

It is an arithmetic number, because the mean of its divisors is an integer number (203753310957).

Almost surely, 2^407506621913 is an apocalyptic number.

It is an amenable number.

407506621913 is a deficient number, since it is larger than the sum of its proper divisors (1).

407506621913 is an equidigital number, since it uses as much as digits as its factorization.

407506621913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 407506621913 in words is "four hundred seven billion, five hundred six million, six hundred twenty-one thousand, nine hundred thirteen".