6201331890781 has 4 divisors (see below), whose sum is σ = 6235976203200. Its totient is φ = 6166687578364.

The previous prime is 6201331890737. The next prime is 6201331890821. The reversal of 6201331890781 is 1870981331026.

It is a happy number.

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 6201331890781 - 2²⁹ = 6200795019869 is a prime.

It is a super-2 number, since 2×6201331890781² (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 (6201131890781) 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, 17322155941 + ... + 17322156298.

It is an arithmetic number, because the mean of its divisors is an integer number (1558994050800).

Almost surely, 2^{6201331890781} is an apocalyptic number.

It is an amenable number.

6201331890781 is a deficient number, since it is larger than the sum of its proper divisors (34644312419).

6201331890781 is a wasteful number, since it uses less digits than its factorization.

6201331890781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34644312418.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 6201331890781 in words is "six trillion, two hundred one billion, three hundred thirty-one million, eight hundred ninety thousand, seven hundred eighty-one".