148766161307381 has 4 divisors (see below), whose sum is σ = 153896028938700. Its totient is φ = 143636293676064.

The previous prime is 148766161307347. The next prime is 148766161307399. The reversal of 148766161307381 is 183703161667841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61948957426756 + 86817203880625 = 7870766^2 + 9317575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148766161307381 is a prime.

It is a super-2 number, since 2×148766161307381² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148766161303381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2564933815616 + ... + 2564933815673.

It is an arithmetic number, because the mean of its divisors is an integer number (38474007234675).

Almost surely, 2^{148766161307381} is an apocalyptic number.

It is an amenable number.

148766161307381 is a deficient number, since it is larger than the sum of its proper divisors (5129867631319).

148766161307381 is an equidigital number, since it uses as much as digits as its factorization.

148766161307381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129867631318.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 148766161307381 in words is "one hundred forty-eight trillion, seven hundred sixty-six billion, one hundred sixty-one million, three hundred seven thousand, three hundred eighty-one".