4278538430265 has 32 divisors (see below), whose sum is σ = 7470546610176. Its totient is φ = 2073733914560.

The previous prime is 4278538430251. The next prime is 4278538430293. The reversal of 4278538430265 is 5620348358724.

It is not a de Polignac number, because 4278538430265 - 2¹⁷ = 4278538299193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3946587 + ... + 4912496.

It is an arithmetic number, because the mean of its divisors is an integer number (233454581568).

Almost surely, 2^{4278538430265} is an apocalyptic number.

It is an amenable number.

4278538430265 is a deficient number, since it is larger than the sum of its proper divisors (3192008179911).

4278538430265 is a wasteful number, since it uses less digits than its factorization.

4278538430265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8862029.

The product of its (nonzero) digits is 38707200, while the sum is 57.

The spelling of 4278538430265 in words is "four trillion, two hundred seventy-eight billion, five hundred thirty-eight million, four hundred thirty thousand, two hundred sixty-five".