6038621886781 has 4 divisors (see below), whose sum is σ = 6587587512864. Its totient is φ = 5489656260700.

The previous prime is 6038621886763. The next prime is 6038621886793. The reversal of 6038621886781 is 1876881268306.

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 not a de Polignac number, because 6038621886781 - 2¹¹ = 6038621884733 is a prime.

It is a super-2 number, since 2×6038621886781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6038621886701) 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, 274482813025 + ... + 274482813046.

It is an arithmetic number, because the mean of its divisors is an integer number (1646896878216).

Almost surely, 2^{6038621886781} is an apocalyptic number.

It is an amenable number.

6038621886781 is a deficient number, since it is larger than the sum of its proper divisors (548965626083).

6038621886781 is a wasteful number, since it uses less digits than its factorization.

6038621886781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548965626082.

The product of its (nonzero) digits is 37158912, while the sum is 64.

The spelling of 6038621886781 in words is "six trillion, thirty-eight billion, six hundred twenty-one million, eight hundred eighty-six thousand, seven hundred eighty-one".