4531001026261 has 4 divisors (see below), whose sum is σ = 4797530498412. Its totient is φ = 4264471554112.

The previous prime is 4531001026249. The next prime is 4531001026267. The reversal of 4531001026261 is 1626201001354.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1240314325636 + 3290686700625 = 1113694^2 + 1814025^2 .

It is a cyclic number.

It is not a de Polignac number, because 4531001026261 - 2⁵ = 4531001026229 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 (4531001026267) 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, 133264736050 + ... + 133264736083.

It is an arithmetic number, because the mean of its divisors is an integer number (1199382624603).

Almost surely, 2^{4531001026261} is an apocalyptic number.

It is an amenable number.

4531001026261 is a deficient number, since it is larger than the sum of its proper divisors (266529472151).

4531001026261 is a wasteful number, since it uses less digits than its factorization.

4531001026261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266529472150.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 4531001026261 in words is "four trillion, five hundred thirty-one billion, one million, twenty-six thousand, two hundred sixty-one".