2506217378 has 16 divisors (see below), whose sum is σ = 4387785984. Its totient is φ = 1051239840.

The previous prime is 2506217369. The next prime is 2506217383. The reversal of 2506217378 is 8737126052.

2506217378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2506217378² = 12562251091578389768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1903763 + ... + 1905078.

It is an arithmetic number, because the mean of its divisors is an integer number (274236624).

Almost surely, 2^2506217378 is an apocalyptic number.

2506217378 is a deficient number, since it is larger than the sum of its proper divisors (1881568606).

2506217378 is a wasteful number, since it uses less digits than its factorization.

2506217378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808897.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 2506217378 is about 50062.1351722038. The cubic root of 2506217378 is about 1358.3329809158.

The spelling of 2506217378 in words is "two billion, five hundred six million, two hundred seventeen thousand, three hundred seventy-eight".