63721006866741 has 32 divisors (see below), whose sum is σ = 102811586819328. Its totient is φ = 34269713740800.

The previous prime is 63721006866739. The next prime is 63721006866763. The reversal of 63721006866741 is 14766860012736.

It is not a de Polignac number, because 63721006866741 - 2¹ = 63721006866739 is a prime.

It is a super-2 number, since 2×63721006866741² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63721006866701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30291651 + ... + 32326863.

It is an arithmetic number, because the mean of its divisors is an integer number (3212862088104).

Almost surely, 2^{63721006866741} is an apocalyptic number.

It is an amenable number.

63721006866741 is a deficient number, since it is larger than the sum of its proper divisors (39090579952587).

63721006866741 is a wasteful number, since it uses less digits than its factorization.

63721006866741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122941.

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 63721006866741 in words is "sixty-three trillion, seven hundred twenty-one billion, six million, eight hundred sixty-six thousand, seven hundred forty-one".