6574641978 has 16 divisors (see below), whose sum is σ = 13184541216. Its totient is φ = 2185671120.

The previous prime is 6574641973. The next prime is 6574641989. The reversal of 6574641978 is 8791464756.

It is not an unprimeable number, because it can be changed into a prime (6574641973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466628 + ... + 1471103.

It is an arithmetic number, because the mean of its divisors is an integer number (824033826).

Almost surely, 2^6574641978 is an apocalyptic number.

6574641978 is an abundant number, since it is smaller than the sum of its proper divisors (6609899238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6574641978 is a wasteful number, since it uses less digits than its factorization.

6574641978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938109.

The product of its digits is 10160640, while the sum is 57.

The square root of 6574641978 is about 81084.1660128536. The cubic root of 6574641978 is about 1873.3720485731.

The spelling of 6574641978 in words is "six billion, five hundred seventy-four million, six hundred forty-one thousand, nine hundred seventy-eight".