6157271021 has 16 divisors (see below), whose sum is σ = 7139871360. Its totient is φ = 5247713280.

The previous prime is 6157270997. The next prime is 6157271041. The reversal of 6157271021 is 1201727516.

It is a cyclic number.

It is not a de Polignac number, because 6157271021 - 2¹⁴ = 6157254637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6157271041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16001 + ... + 112118.

It is an arithmetic number, because the mean of its divisors is an integer number (446241960).

Almost surely, 2^6157271021 is an apocalyptic number.

It is an amenable number.

6157271021 is a deficient number, since it is larger than the sum of its proper divisors (982600339).

6157271021 is a wasteful number, since it uses less digits than its factorization.

6157271021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128404.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 6157271021 is about 78468.2803494508. The cubic root of 6157271021 is about 1832.8605486734.

Adding to 6157271021 its reverse (1201727516), we get a palindrome (7358998537).

The spelling of 6157271021 in words is "six billion, one hundred fifty-seven million, two hundred seventy-one thousand, twenty-one".