7461255211661 has 16 divisors (see below), whose sum is σ = 8274996387840. Its totient is φ = 6695585938800.

The previous prime is 7461255211639. The next prime is 7461255211693. The reversal of 7461255211661 is 1661125521647.

7461255211661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7461255211661 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 (7461255291661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82837565 + ... + 82927586.

It is an arithmetic number, because the mean of its divisors is an integer number (517187274240).

Almost surely, 2^{7461255211661} is an apocalyptic number.

It is an amenable number.

7461255211661 is a deficient number, since it is larger than the sum of its proper divisors (813741176179).

7461255211661 is a wasteful number, since it uses less digits than its factorization.

7461255211661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165765296.

The product of its digits is 604800, while the sum is 47.

The spelling of 7461255211661 in words is "seven trillion, four hundred sixty-one billion, two hundred fifty-five million, two hundred eleven thousand, six hundred sixty-one".