611254621013 has 4 divisors (see below), whose sum is σ = 626163270348. Its totient is φ = 596345971680.

The previous prime is 611254620989. The next prime is 611254621027. The reversal of 611254621013 is 310126452116.

611254621013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 247787915089 + 363466705924 = 497783^2 + 602882^2 .

It is a cyclic number.

It is not a de Polignac number, because 611254621013 - 2³² = 606959653717 is a prime.

It is a super-2 number, since 2×611254621013² (a number of 24 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 (611254621063) 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, 7454324606 + ... + 7454324687.

It is an arithmetic number, because the mean of its divisors is an integer number (156540817587).

Almost surely, 2^611254621013 is an apocalyptic number.

It is an amenable number.

611254621013 is a deficient number, since it is larger than the sum of its proper divisors (14908649335).

611254621013 is a wasteful number, since it uses less digits than its factorization.

611254621013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14908649334.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 611254621013 in words is "six hundred eleven billion, two hundred fifty-four million, six hundred twenty-one thousand, thirteen".