6475127978 has 32 divisors (see below), whose sum is σ = 10902667392. Its totient is φ = 2859064000.

The previous prime is 6475127951. The next prime is 6475127987. The reversal of 6475127978 is 8797215746.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90275 + ... + 145257.

It is an arithmetic number, because the mean of its divisors is an integer number (340708356).

Almost surely, 2^6475127978 is an apocalyptic number.

6475127978 is a deficient number, since it is larger than the sum of its proper divisors (4427539414).

6475127978 is a wasteful number, since it uses less digits than its factorization.

6475127978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55150.

The product of its digits is 5927040, while the sum is 56.

The square root of 6475127978 is about 80468.1799098252. The cubic root of 6475127978 is about 1863.8721486124.

It can be divided in two parts, 64751 and 27978, that added together give a palindrome (92729).

The spelling of 6475127978 in words is "six billion, four hundred seventy-five million, one hundred twenty-seven thousand, nine hundred seventy-eight".