152277221749 has 4 divisors (see below), whose sum is σ = 157528160460. Its totient is φ = 147026283040.

The previous prime is 152277221713. The next prime is 152277221827. The reversal of 152277221749 is 947122772251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947122772251 = 3109 ⋅304639039.

It can be written as a sum of positive squares in 2 ways, for example, as 108690221124 + 43587000625 = 329682^2 + 208775^2 .

It is a cyclic number.

It is not a de Polignac number, because 152277221749 - 2¹¹ = 152277219701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152277227749) 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, 2625469312 + ... + 2625469369.

It is an arithmetic number, because the mean of its divisors is an integer number (39382040115).

Almost surely, 2^152277221749 is an apocalyptic number.

It is an amenable number.

152277221749 is a deficient number, since it is larger than the sum of its proper divisors (5250938711).

152277221749 is an equidigital number, since it uses as much as digits as its factorization.

152277221749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250938710.

The product of its digits is 987840, while the sum is 49.

The spelling of 152277221749 in words is "one hundred fifty-two billion, two hundred seventy-seven million, two hundred twenty-one thousand, seven hundred forty-nine".