6171494021 has 32 divisors (see below), whose sum is σ = 8142114816. Its totient is φ = 4534992000.

The previous prime is 6171493931. The next prime is 6171494023. The reversal of 6171494021 is 1204941716.

It is not a de Polignac number, because 6171494021 - 2¹⁸ = 6171231877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6171494023) 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, 101201 + ... + 150281.

It is an arithmetic number, because the mean of its divisors is an integer number (254441088).

Almost surely, 2^6171494021 is an apocalyptic number.

It is an amenable number.

6171494021 is a deficient number, since it is larger than the sum of its proper divisors (1970620795).

6171494021 is a wasteful number, since it uses less digits than its factorization.

6171494021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49193.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 6171494021 is about 78558.8570499851. The cubic root of 6171494021 is about 1834.2707366542.

The spelling of 6171494021 in words is "six billion, one hundred seventy-one million, four hundred ninety-four thousand, twenty-one".