63949121701 has 16 divisors (see below), whose sum is σ = 65576485440. Its totient is φ = 62342755200.

The previous prime is 63949121689. The next prime is 63949121737. The reversal of 63949121701 is 10712194936.

63949121701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 63949121701 - 2⁷ = 63949121573 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 (63949121771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8089851 + ... + 8097751.

It is an arithmetic number, because the mean of its divisors is an integer number (4098530340).

Almost surely, 2^63949121701 is an apocalyptic number.

It is an amenable number.

63949121701 is a deficient number, since it is larger than the sum of its proper divisors (1627363739).

63949121701 is a wasteful number, since it uses less digits than its factorization.

63949121701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9204.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 63949121701 in words is "sixty-three billion, nine hundred forty-nine million, one hundred twenty-one thousand, seven hundred one".