145274671757 has 8 divisors (see below), whose sum is σ = 148826989752. Its totient is φ = 141722784000.

The previous prime is 145274671733. The next prime is 145274671811. The reversal of 145274671757 is 757176472541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6945722281 + 138328949476 = 83341^2 + 371926^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145274671757 - 2⁶ = 145274671693 is a prime.

It is a super-2 number, since 2×145274671757² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145274601757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638507 + ... + 835607.

It is an arithmetic number, because the mean of its divisors is an integer number (18603373719).

Almost surely, 2^145274671757 is an apocalyptic number.

It is an amenable number.

145274671757 is a deficient number, since it is larger than the sum of its proper divisors (3552317995).

145274671757 is a wasteful number, since it uses less digits than its factorization.

145274671757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215119.

The product of its digits is 11524800, while the sum is 56.

The spelling of 145274671757 in words is "one hundred forty-five billion, two hundred seventy-four million, six hundred seventy-one thousand, seven hundred fifty-seven".