667945442155 has 8 divisors (see below), whose sum is σ = 801672737184. Its totient is φ = 534264216000.

The previous prime is 667945442113. The next prime is 667945442167. The reversal of 667945442155 is 551244549766.

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

It is not a de Polignac number, because 667945442155 - 2¹³ = 667945433963 is a prime.

It is a super-2 number, since 2×667945442155² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667945442155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11485311 + ... + 11543320.

It is an arithmetic number, because the mean of its divisors is an integer number (100209092148).

Almost surely, 2^667945442155 is an apocalyptic number.

667945442155 is a deficient number, since it is larger than the sum of its proper divisors (133727295029).

667945442155 is a wasteful number, since it uses less digits than its factorization.

667945442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23034437.

The product of its digits is 36288000, while the sum is 58.

The spelling of 667945442155 in words is "six hundred sixty-seven billion, nine hundred forty-five million, four hundred forty-two thousand, one hundred fifty-five".