61601560003 has 4 divisors (see below), whose sum is σ = 61979483848. Its totient is φ = 61223636160.

The previous prime is 61601559991. The next prime is 61601560019. The reversal of 61601560003 is 30006510616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61601560003 - 2²¹ = 61599462851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61601560903) 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, 188961678 + ... + 188962003.

It is an arithmetic number, because the mean of its divisors is an integer number (15494870962).

Almost surely, 2^61601560003 is an apocalyptic number.

61601560003 is a deficient number, since it is larger than the sum of its proper divisors (377923845).

61601560003 is a wasteful number, since it uses less digits than its factorization.

61601560003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377923844.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 61601560003 in words is "sixty-one billion, six hundred one million, five hundred sixty thousand, three".