61603110321 has 8 divisors (see below), whose sum is σ = 82905120864. Its totient is φ = 40684920000.

The previous prime is 61603110313. The next prime is 61603110383. The reversal of 61603110321 is 12301130616.

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

It is not a de Polignac number, because 61603110321 - 2³ = 61603110313 is a prime.

It is a super-3 number, since 3×61603110321³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61603110291 and 61603110300.

It is not an unprimeable number, because it can be changed into a prime (61603110301) 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, 95954680 + ... + 95955321.

It is an arithmetic number, because the mean of its divisors is an integer number (10363140108).

Almost surely, 2^61603110321 is an apocalyptic number.

It is an amenable number.

61603110321 is a deficient number, since it is larger than the sum of its proper divisors (21302010543).

61603110321 is a wasteful number, since it uses less digits than its factorization.

61603110321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191910111.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 61603110321 its reverse (12301130616), we get a palindrome (73904240937).

The spelling of 61603110321 in words is "sixty-one billion, six hundred three million, one hundred ten thousand, three hundred twenty-one".