1063862663991 has 8 divisors (see below), whose sum is σ = 1493140581120. Its totient is φ = 671913261432.

The previous prime is 1063862663987. The next prime is 1063862663999. The reversal of 1063862663991 is 1993662683601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1063862663991 - 2² = 1063862663987 is a prime.

It is a super-2 number, since 2×1063862663991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063862663999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9332128575 + ... + 9332128688.

It is an arithmetic number, because the mean of its divisors is an integer number (186642572640).

Almost surely, 2^{1063862663991} is an apocalyptic number.

1063862663991 is a deficient number, since it is larger than the sum of its proper divisors (429277917129).

1063862663991 is a wasteful number, since it uses less digits than its factorization.

1063862663991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18664257285.

The product of its (nonzero) digits is 15116544, while the sum is 60.

The spelling of 1063862663991 in words is "one trillion, sixty-three billion, eight hundred sixty-two million, six hundred sixty-three thousand, nine hundred ninety-one".