63407077072221 has 4 divisors (see below), whose sum is σ = 84542769429632. Its totient is φ = 42271384714812.

The previous prime is 63407077072169. The next prime is 63407077072237. The reversal of 63407077072221 is 12227077070436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63407077072221 - 2¹⁷ = 63407076941149 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 (63407077072291) 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, 10567846178701 + ... + 10567846178706.

It is an arithmetic number, because the mean of its divisors is an integer number (21135692357408).

Almost surely, 2^{63407077072221} is an apocalyptic number.

It is an amenable number.

63407077072221 is a deficient number, since it is larger than the sum of its proper divisors (21135692357411).

63407077072221 is a wasteful number, since it uses less digits than its factorization.

63407077072221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21135692357410.

The product of its (nonzero) digits is 1382976, while the sum is 48.

The spelling of 63407077072221 in words is "sixty-three trillion, four hundred seven billion, seventy-seven million, seventy-two thousand, two hundred twenty-one".