667077334440 has 64 divisors (see below), whose sum is σ = 2183162189760. Its totient is φ = 161715717120.

The previous prime is 667077334433. The next prime is 667077334447. The reversal of 667077334440 is 44433770766.

It is an interprime number because it is at equal distance from previous prime (667077334433) and next prime (667077334447).

It is a super-2 number, since 2×667077334440² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667077334447) 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, 252679489 + ... + 252682128.

It is an arithmetic number, because the mean of its divisors is an integer number (34111909215).

Almost surely, 2^667077334440 is an apocalyptic number.

667077334440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667077334440 is an abundant number, since it is smaller than the sum of its proper divisors (1516084855320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667077334440 is a wasteful number, since it uses less digits than its factorization.

667077334440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505361642 (or 505361638 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 51.

The spelling of 667077334440 in words is "six hundred sixty-seven billion, seventy-seven million, three hundred thirty-four thousand, four hundred forty".