5571660661754 has 8 divisors (see below), whose sum is σ = 9117262901088. Its totient is φ = 2532573028060.

The previous prime is 5571660661751. The next prime is 5571660661757. The reversal of 5571660661754 is 4571660661755.

It is an interprime number because it is at equal distance from previous prime (5571660661751) and next prime (5571660661757).

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

It is a super-3 number, since 3×5571660661754³ (a number of 39 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5571660661693 and 5571660661702.

It is not an unprimeable number, because it can be changed into a prime (5571660661751) 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, 126628651382 + ... + 126628651425.

It is an arithmetic number, because the mean of its divisors is an integer number (1139657862636).

Almost surely, 2^{5571660661754} is an apocalyptic number.

5571660661754 is a deficient number, since it is larger than the sum of its proper divisors (3545602239334).

5571660661754 is a wasteful number, since it uses less digits than its factorization.

5571660661754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253257302820.

The product of its (nonzero) digits is 31752000, while the sum is 59.

Subtracting from 5571660661754 its reverse (4571660661755), we obtain a palindrome (999999999999).

The spelling of 5571660661754 in words is "five trillion, five hundred seventy-one billion, six hundred sixty million, six hundred sixty-one thousand, seven hundred fifty-four".