66740401000077 has 32 divisors (see below), whose sum is σ = 110186223916032. Its totient is φ = 35059253048064.

The previous prime is 66740401000061. The next prime is 66740401000081. The reversal of 66740401000077 is 77000010404766.

It is not a de Polignac number, because 66740401000077 - 2⁴ = 66740401000061 is a prime.

It is a super-2 number, since 2×66740401000077² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66740401000577) 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, 2173797463 + ... + 2173828164.

It is an arithmetic number, because the mean of its divisors is an integer number (3443319497376).

Almost surely, 2^{66740401000077} is an apocalyptic number.

It is an amenable number.

66740401000077 is a deficient number, since it is larger than the sum of its proper divisors (43445822915955).

66740401000077 is a wasteful number, since it uses less digits than its factorization.

66740401000077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347625697.

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 66740401000077 in words is "sixty-six trillion, seven hundred forty billion, four hundred one million, seventy-seven", and thus it is an aban number.