145149216937 has 6 divisors (see below), whose sum is σ = 151734437162. Its totient is φ = 138838380912.

The previous prime is 145149216889. The next prime is 145149217009. The reversal of 145149216937 is 739612941541.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 129448124521 + 15701092416 = 359789^2 + 125304^2 .

It is not a de Polignac number, because 145149216937 - 2¹⁹ = 145148692649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145149216437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137191548 + ... + 137192605.

Almost surely, 2^145149216937 is an apocalyptic number.

It is an amenable number.

145149216937 is a deficient number, since it is larger than the sum of its proper divisors (6585220225).

145149216937 is an equidigital number, since it uses as much as digits as its factorization.

145149216937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274384199 (or 274384176 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The spelling of 145149216937 in words is "one hundred forty-five billion, one hundred forty-nine million, two hundred sixteen thousand, nine hundred thirty-seven".