5661520023 has 8 divisors (see below), whose sum is σ = 7549166448. Its totient is φ = 3774110144.

The previous prime is 5661520019. The next prime is 5661520027. The reversal of 5661520023 is 3200251665.

It is an interprime number because it is at equal distance from previous prime (5661520019) and next prime (5661520027).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5661520023 - 2² = 5661520019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661520027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7411 + ... + 106667.

It is an arithmetic number, because the mean of its divisors is an integer number (943645806).

Almost surely, 2^5661520023 is an apocalyptic number.

5661520023 is a deficient number, since it is larger than the sum of its proper divisors (1887646425).

5661520023 is a wasteful number, since it uses less digits than its factorization.

5661520023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118273.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 5661520023 is about 75243.0729236918. The cubic root of 5661520023 is about 1782.2871771806.

Adding to 5661520023 its reverse (3200251665), we get a palindrome (8861771688).

The spelling of 5661520023 in words is "five billion, six hundred sixty-one million, five hundred twenty thousand, twenty-three".