4278517425655 has 32 divisors (see below), whose sum is σ = 5657037573888. Its totient is φ = 3080537740800.

The previous prime is 4278517425643. The next prime is 4278517425667. The reversal of 4278517425655 is 5565247158724.

It is an interprime number because it is at equal distance from previous prime (4278517425643) and next prime (4278517425667).

It is not a de Polignac number, because 4278517425655 - 2¹³ = 4278517417463 is a prime.

It is a super-2 number, since 2×4278517425655² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4278517425593 and 4278517425602.

It is a congruent number.

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, 8724175 + ... + 9201535.

It is an arithmetic number, because the mean of its divisors is an integer number (176782424184).

Almost surely, 2^{4278517425655} is an apocalyptic number.

4278517425655 is a deficient number, since it is larger than the sum of its proper divisors (1378520148233).

4278517425655 is a wasteful number, since it uses less digits than its factorization.

4278517425655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479007.

The product of its digits is 94080000, while the sum is 61.

The spelling of 4278517425655 in words is "four trillion, two hundred seventy-eight billion, five hundred seventeen million, four hundred twenty-five thousand, six hundred fifty-five".