149253822481 has 4 divisors (see below), whose sum is σ = 149382158832. Its totient is φ = 149125486132.

The previous prime is 149253822469. The next prime is 149253822541. The reversal of 149253822481 is 184228352941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184228352941 = 11699 ⋅15747359.

It is a cyclic number.

It is not a de Polignac number, because 149253822481 - 2¹⁷ = 149253691409 is a prime.

It is a super-2 number, since 2×149253822481² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149253822401) 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, 64166431 + ... + 64168756.

It is an arithmetic number, because the mean of its divisors is an integer number (37345539708).

Almost surely, 2^149253822481 is an apocalyptic number.

It is an amenable number.

149253822481 is a deficient number, since it is larger than the sum of its proper divisors (128336351).

149253822481 is a wasteful number, since it uses less digits than its factorization.

149253822481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128336350.

The product of its digits is 1105920, while the sum is 49.

The spelling of 149253822481 in words is "one hundred forty-nine billion, two hundred fifty-three million, eight hundred twenty-two thousand, four hundred eighty-one".