63601121501 has 4 divisors (see below), whose sum is σ = 63609364512. Its totient is φ = 63592878492.

The previous prime is 63601121483. The next prime is 63601121537. The reversal of 63601121501 is 10512110636.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63601121501 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 (63601121581) 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, 4109921 + ... + 4125366.

It is an arithmetic number, because the mean of its divisors is an integer number (15902341128).

Almost surely, 2^63601121501 is an apocalyptic number.

It is an amenable number.

63601121501 is a deficient number, since it is larger than the sum of its proper divisors (8243011).

63601121501 is an equidigital number, since it uses as much as digits as its factorization.

63601121501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243010.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 63601121501 in words is "sixty-three billion, six hundred one million, one hundred twenty-one thousand, five hundred one".