63479492951 has 4 divisors (see below), whose sum is σ = 72547991952. Its totient is φ = 54410993952.

The previous prime is 63479492941. The next prime is 63479492953. The reversal of 63479492951 is 15929497436.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63479492951 - 2¹⁰ = 63479491927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63479492953) 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, 4534249490 + ... + 4534249503.

It is an arithmetic number, because the mean of its divisors is an integer number (18136997988).

Almost surely, 2^63479492951 is an apocalyptic number.

63479492951 is a deficient number, since it is larger than the sum of its proper divisors (9068499001).

63479492951 is an equidigital number, since it uses as much as digits as its factorization.

63479492951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068499000.

The product of its digits is 14696640, while the sum is 59.

The spelling of 63479492951 in words is "sixty-three billion, four hundred seventy-nine million, four hundred ninety-two thousand, nine hundred fifty-one".