5556578623 has 2 divisors, whose sum is σ = 5556578624. Its totient is φ = 5556578622.

The previous prime is 5556578609. The next prime is 5556578627. The reversal of 5556578623 is 3268756555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5556578623 - 2⁵ = 5556578591 is a prime.

It is a super-2 number, since 2×5556578623² = 61751131987161152258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5556578627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778289311 + 2778289312.

It is an arithmetic number, because the mean of its divisors is an integer number (2778289312).

Almost surely, 2^5556578623 is an apocalyptic number.

5556578623 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556578623 is an equidigital number, since it uses as much as digits as its factorization.

5556578623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560000, while the sum is 52.

The square root of 5556578623 is about 74542.4618791196. The cubic root of 5556578623 is about 1771.2063257702.

The spelling of 5556578623 in words is "five billion, five hundred fifty-six million, five hundred seventy-eight thousand, six hundred twenty-three".