63697030391 has 2 divisors, whose sum is σ = 63697030392. Its totient is φ = 63697030390.

The previous prime is 63697030273. The next prime is 63697030409. The reversal of 63697030391 is 19303079636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63697030391 - 2²⁶ = 63629921527 is a prime.

It is a super-2 number, since 2×63697030391² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63697030591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31848515195 + 31848515196.

It is an arithmetic number, because the mean of its divisors is an integer number (31848515196).

Almost surely, 2^63697030391 is an apocalyptic number.

63697030391 is a deficient number, since it is larger than the sum of its proper divisors (1).

63697030391 is an equidigital number, since it uses as much as digits as its factorization.

63697030391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 47.

The spelling of 63697030391 in words is "sixty-three billion, six hundred ninety-seven million, thirty thousand, three hundred ninety-one".