138066077361001 has 4 divisors (see below), whose sum is σ = 145332713011600. Its totient is φ = 130799441710404.

The previous prime is 138066077360989. The next prime is 138066077361007. The reversal of 138066077361001 is 100163770660831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138066077361001 - 2²⁷ = 138065943143273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138066077361007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3633317825271 + ... + 3633317825308.

It is an arithmetic number, because the mean of its divisors is an integer number (36333178252900).

Almost surely, 2^{138066077361001} is an apocalyptic number.

It is an amenable number.

138066077361001 is a deficient number, since it is larger than the sum of its proper divisors (7266635650599).

138066077361001 is an equidigital number, since it uses as much as digits as its factorization.

138066077361001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266635650598.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 138066077361001 in words is "one hundred thirty-eight trillion, sixty-six billion, seventy-seven million, three hundred sixty-one thousand, one".