5661001155479 has 2 divisors, whose sum is σ = 5661001155480. Its totient is φ = 5661001155478.

The previous prime is 5661001155461. The next prime is 5661001155533. The reversal of 5661001155479 is 9745511001665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5661001155479 - 2⁴⁰ = 4561489527703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661001158479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830500577739 + 2830500577740.

It is an arithmetic number, because the mean of its divisors is an integer number (2830500577740).

Almost surely, 2^{5661001155479} is an apocalyptic number.

5661001155479 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661001155479 is an equidigital number, since it uses as much as digits as its factorization.

5661001155479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 5661001155479 in words is "five trillion, six hundred sixty-one billion, one million, one hundred fifty-five thousand, four hundred seventy-nine".