556121478466 has 8 divisors (see below), whose sum is σ = 834534051984. Its totient is φ = 277943461140.

The previous prime is 556121478449. The next prime is 556121478467. The reversal of 556121478466 is 664874121655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×556121478466² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (556121478467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58633120 + ... + 58642603.

It is an arithmetic number, because the mean of its divisors is an integer number (104316756498).

Almost surely, 2^556121478466 is an apocalyptic number.

556121478466 is a deficient number, since it is larger than the sum of its proper divisors (278412573518).

556121478466 is a wasteful number, since it uses less digits than its factorization.

556121478466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117278096.

The product of its digits is 9676800, while the sum is 55.

The spelling of 556121478466 in words is "five hundred fifty-six billion, one hundred twenty-one million, four hundred seventy-eight thousand, four hundred sixty-six".