278055055007 has 2 divisors, whose sum is σ = 278055055008. Its totient is φ = 278055055006.

The previous prime is 278055054967. The next prime is 278055055027. The reversal of 278055055007 is 700550550872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 278055055007 - 2²⁰ = 278054006431 is a prime.

It is a super-2 number, since 2×278055055007² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278055055027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139027527503 + 139027527504.

It is an arithmetic number, because the mean of its divisors is an integer number (139027527504).

Almost surely, 2^278055055007 is an apocalyptic number.

278055055007 is a deficient number, since it is larger than the sum of its proper divisors (1).

278055055007 is an equidigital number, since it uses as much as digits as its factorization.

278055055007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490000, while the sum is 44.

The spelling of 278055055007 in words is "two hundred seventy-eight billion, fifty-five million, fifty-five thousand, seven".