6538479430972 has 12 divisors (see below), whose sum is σ = 12115417769280. Its totient is φ = 3076931496896.

The previous prime is 6538479430969. The next prime is 6538479430979. The reversal of 6538479430972 is 2790349748356.

It is a junction number, because it is equal to n+sod(n) for n = 6538479430898 and 6538479430907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538479430979) 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, 48077054572 + ... + 48077054707.

It is an arithmetic number, because the mean of its divisors is an integer number (1009618147440).

Almost surely, 2^{6538479430972} is an apocalyptic number.

It is an amenable number.

6538479430972 is a deficient number, since it is larger than the sum of its proper divisors (5576938338308).

6538479430972 is a wasteful number, since it uses less digits than its factorization.

6538479430972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96154109300 (or 96154109298 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 67.

The spelling of 6538479430972 in words is "six trillion, five hundred thirty-eight billion, four hundred seventy-nine million, four hundred thirty thousand, nine hundred seventy-two".