63350572421 has 4 divisors (see below), whose sum is σ = 65062750092. Its totient is φ = 61638394752.

The previous prime is 63350572367. The next prime is 63350572427. The reversal of 63350572421 is 12427505336.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32625390625 + 30725181796 = 180625^2 + 175286^2 .

It is a cyclic number.

It is not a de Polignac number, because 63350572421 - 2⁶ = 63350572357 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 (63350572427) 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, 856088780 + ... + 856088853.

It is an arithmetic number, because the mean of its divisors is an integer number (16265687523).

Almost surely, 2^63350572421 is an apocalyptic number.

It is an amenable number.

63350572421 is a deficient number, since it is larger than the sum of its proper divisors (1712177671).

63350572421 is a wasteful number, since it uses less digits than its factorization.

63350572421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712177670.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 63350572421 in words is "sixty-three billion, three hundred fifty million, five hundred seventy-two thousand, four hundred twenty-one".