675238131261 has 6 divisors (see below), whose sum is σ = 975343967390. Its totient is φ = 450158754168.

The previous prime is 675238131257. The next prime is 675238131289. The reversal of 675238131261 is 162131832576.

It is a happy number.

675238131261 is a `hidden beast` number, since 6 + 7 + 5 + 2 + 381 + 3 + 1 + 261 = 666.

It can be written as a sum of positive squares in only one way, i.e., 642298059225 + 32940072036 = 801435^2 + 181494^2 .

It is not a de Polignac number, because 675238131261 - 2² = 675238131257 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 (675238131461) 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, 37513229506 + ... + 37513229523.

Almost surely, 2^675238131261 is an apocalyptic number.

It is an amenable number.

675238131261 is a deficient number, since it is larger than the sum of its proper divisors (300105836129).

675238131261 is a wasteful number, since it uses less digits than its factorization.

675238131261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75026459035 (or 75026459032 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 675238131261 in words is "six hundred seventy-five billion, two hundred thirty-eight million, one hundred thirty-one thousand, two hundred sixty-one".