561213316472490 has 64 divisors (see below), whose sum is σ = 1632620557019520. Its totient is φ = 136051713083520.

The previous prime is 561213316472453. The next prime is 561213316472491. The reversal of 561213316472490 is 94274613312165.

561213316472490 is a `hidden beast` number, since 5 + 6 + 1 + 2 + 1 + 331 + 64 + 7 + 249 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (561213316472491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94480353339 + ... + 94480359278.

It is an arithmetic number, because the mean of its divisors is an integer number (25509696203430).

Almost surely, 2^{561213316472490} is an apocalyptic number.

561213316472490 is an abundant number, since it is smaller than the sum of its proper divisors (1071407240547030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561213316472490 is a wasteful number, since it uses less digits than its factorization.

561213316472490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188960712644 (or 188960712638 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 561213316472490 in words is "five hundred sixty-one trillion, two hundred thirteen billion, three hundred sixteen million, four hundred seventy-two thousand, four hundred ninety".