611401242261 has 64 divisors (see below), whose sum is σ = 880626733056. Its totient is φ = 376360512000.

The previous prime is 611401242247. The next prime is 611401242301. The reversal of 611401242261 is 162242104116.

611401242261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 611401242261 - 2⁶ = 611401242197 is a prime.

It is a super-2 number, since 2×611401242261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611401242061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107241711 + ... + 107247411.

It is an arithmetic number, because the mean of its divisors is an integer number (13759792704).

Almost surely, 2^611401242261 is an apocalyptic number.

It is an amenable number.

611401242261 is a deficient number, since it is larger than the sum of its proper divisors (269225490795).

611401242261 is a wasteful number, since it uses less digits than its factorization.

611401242261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 611401242261 its reverse (162242104116), we get a palindrome (773643346377).

The spelling of 611401242261 in words is "six hundred eleven billion, four hundred one million, two hundred forty-two thousand, two hundred sixty-one".