42847644872464 has 10 divisors (see below), whose sum is σ = 83017311940430. Its totient is φ = 21423822436224.

The previous prime is 42847644872423. The next prime is 42847644872479. The reversal of 42847644872464 is 46427844674824.

It can be written as a sum of positive squares in only one way, i.e., 41305557763600 + 1542087108864 = 6426940^2 + 1241808^2 .

It is a super-2 number, since 2×42847644872464² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42847644872393 and 42847644872402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1338988902249 + ... + 1338988902280.

It is an arithmetic number, because the mean of its divisors is an integer number (8301731194043).

Almost surely, 2^{42847644872464} is an apocalyptic number.

It is an amenable number.

42847644872464 is a deficient number, since it is larger than the sum of its proper divisors (40169667067966).

42847644872464 is a wasteful number, since it uses less digits than its factorization.

42847644872464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677977804537 (or 2677977804531 counting only the distinct ones).

The product of its digits is 1849688064, while the sum is 70.

The spelling of 42847644872464 in words is "forty-two trillion, eight hundred forty-seven billion, six hundred forty-four million, eight hundred seventy-two thousand, four hundred sixty-four".