2517216478 has 16 divisors (see below), whose sum is σ = 4323888000. Its totient is φ = 1076642136.

The previous prime is 2517216473. The next prime is 2517216479. The reversal of 2517216478 is 8746127152.

2517216478 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 2×2517216478² = 12672757594229448968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2517216473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173176 + ... + 187147.

It is an arithmetic number, because the mean of its divisors is an integer number (270243000).

Almost surely, 2^2517216478 is an apocalyptic number.

2517216478 is a deficient number, since it is larger than the sum of its proper divisors (1806671522).

2517216478 is a wasteful number, since it uses less digits than its factorization.

2517216478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360831.

The product of its digits is 188160, while the sum is 43.

The square root of 2517216478 is about 50171.8693891308. The cubic root of 2517216478 is about 1360.3171978556.

The spelling of 2517216478 in words is "two billion, five hundred seventeen million, two hundred sixteen thousand, four hundred seventy-eight".