545600631521 has 4 divisors (see below), whose sum is σ = 595200688944. Its totient is φ = 496000574100.

The previous prime is 545600631517. The next prime is 545600631533. The reversal of 545600631521 is 125136006545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545600631521 - 2² = 545600631517 is a prime.

It is a super-2 number, since 2×545600631521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545600631571) 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, 24800028695 + ... + 24800028716.

It is an arithmetic number, because the mean of its divisors is an integer number (148800172236).

Almost surely, 2^545600631521 is an apocalyptic number.

It is an amenable number.

545600631521 is a deficient number, since it is larger than the sum of its proper divisors (49600057423).

545600631521 is a wasteful number, since it uses less digits than its factorization.

545600631521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49600057422.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 545600631521 in words is "five hundred forty-five billion, six hundred million, six hundred thirty-one thousand, five hundred twenty-one".