66700007740740 has 96 divisors (see below), whose sum is σ = 203761558103040. Its totient is φ = 16167845462400.

The previous prime is 66700007740739. The next prime is 66700007740741. The reversal of 66700007740740 is 4704770000766.

It is an interprime number because it is at equal distance from previous prime (66700007740739) and next prime (66700007740741).

It is a super-2 number, since 2×66700007740740² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66700007740740.

It is not an unprimeable number, because it can be changed into a prime (66700007740741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25000 + ... + 11549919.

It is an arithmetic number, because the mean of its divisors is an integer number (2122516230240).

Almost surely, 2^{66700007740740} is an apocalyptic number.

66700007740740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66700007740740 is an abundant number, since it is smaller than the sum of its proper divisors (137061550362300).

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

66700007740740 is a wasteful number, since it uses less digits than its factorization.

66700007740740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11583673 (or 11583671 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 48.

The spelling of 66700007740740 in words is "sixty-six trillion, seven hundred billion, seven million, seven hundred forty thousand, seven hundred forty".