667214482478 has 32 divisors (see below), whose sum is σ = 1078914751200. Its totient is φ = 308300575744.

The previous prime is 667214482469. The next prime is 667214482499. The reversal of 667214482478 is 874284412766.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1525088 + ... + 1913196.

It is an arithmetic number, because the mean of its divisors is an integer number (33716085975).

Almost surely, 2^667214482478 is an apocalyptic number.

667214482478 is a deficient number, since it is larger than the sum of its proper divisors (411700268722).

667214482478 is a wasteful number, since it uses less digits than its factorization.

667214482478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389044.

The product of its digits is 28901376, while the sum is 59.

The spelling of 667214482478 in words is "six hundred sixty-seven billion, two hundred fourteen million, four hundred eighty-two thousand, four hundred seventy-eight".