618864227451 has 16 divisors (see below), whose sum is σ = 916850178720. Its totient is φ = 412569722880.

The previous prime is 618864227419. The next prime is 618864227473. The reversal of 618864227451 is 154722468816.

618864227451 is a `hidden beast` number, since 6 + 188 + 6 + 4 + 2 + 2 + 7 + 451 = 666.

618864227451 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 618864227451 - 2⁵ = 618864227419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618864227351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2127931 + ... + 2401211.

It is an arithmetic number, because the mean of its divisors is an integer number (57303136170).

Almost surely, 2^618864227451 is an apocalyptic number.

618864227451 is a deficient number, since it is larger than the sum of its proper divisors (297985951269).

618864227451 is a wasteful number, since it uses less digits than its factorization.

618864227451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357163 (or 357157 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 618864227451 in words is "six hundred eighteen billion, eight hundred sixty-four million, two hundred twenty-seven thousand, four hundred fifty-one".