6157427881 has 4 divisors (see below), whose sum is σ = 6717194064. Its totient is φ = 5597661700.

The previous prime is 6157427879. The next prime is 6157427893. The reversal of 6157427881 is 1887247516.

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 6157427881 - 2¹ = 6157427879 is a prime.

It is a super-2 number, since 2×6157427881² = 75827836219432300322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6157427851) 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, 279883075 + ... + 279883096.

It is an arithmetic number, because the mean of its divisors is an integer number (1679298516).

Almost surely, 2^6157427881 is an apocalyptic number.

It is an amenable number.

6157427881 is a deficient number, since it is larger than the sum of its proper divisors (559766183).

6157427881 is a wasteful number, since it uses less digits than its factorization.

6157427881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559766182.

The product of its digits is 752640, while the sum is 49.

The square root of 6157427881 is about 78469.2798552402. The cubic root of 6157427881 is about 1832.8761129314.

The spelling of 6157427881 in words is "six billion, one hundred fifty-seven million, four hundred twenty-seven thousand, eight hundred eighty-one".