667278502442 has 16 divisors (see below), whose sum is σ = 1035506592000. Its totient is φ = 322157579520.

The previous prime is 667278502433. The next prime is 667278502447. The reversal of 667278502442 is 244205872766.

It is not an unprimeable number, because it can be changed into a prime (667278502447) 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, 11957192 + ... + 12012867.

It is an arithmetic number, because the mean of its divisors is an integer number (64719162000).

Almost surely, 2^667278502442 is an apocalyptic number.

667278502442 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

667278502442 is a deficient number, since it is larger than the sum of its proper divisors (368228089558).

667278502442 is a wasteful number, since it uses less digits than its factorization.

667278502442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23970541.

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 667278502442 in words is "six hundred sixty-seven billion, two hundred seventy-eight million, five hundred two thousand, four hundred forty-two".