149283762865 has 4 divisors (see below), whose sum is σ = 179140515444. Its totient is φ = 119427010288.

The previous prime is 149283762847. The next prime is 149283762877. The reversal of 149283762865 is 568267382941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568267382941 = 14879 ⋅38192579.

It can be written as a sum of positive squares in 2 ways, for example, as 88043351841 + 61240411024 = 296721^2 + 247468^2 .

It is a cyclic number.

It is not a de Polignac number, because 149283762865 - 2¹³ = 149283754673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14928376282 + ... + 14928376291.

It is an arithmetic number, because the mean of its divisors is an integer number (44785128861).

Almost surely, 2^149283762865 is an apocalyptic number.

It is an amenable number.

149283762865 is a deficient number, since it is larger than the sum of its proper divisors (29856752579).

149283762865 is an equidigital number, since it uses as much as digits as its factorization.

149283762865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29856752578.

The product of its digits is 34836480, while the sum is 61.

The spelling of 149283762865 in words is "one hundred forty-nine billion, two hundred eighty-three million, seven hundred sixty-two thousand, eight hundred sixty-five".