61604020263 has 16 divisors (see below), whose sum is σ = 83689090560. Its totient is φ = 40298919936.

The previous prime is 61604020193. The next prime is 61604020271. The reversal of 61604020263 is 36202040616.

61604020263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61604020263 - 2²⁶ = 61536911399 is a prime.

It is a super-2 number, since 2×61604020263² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61604020263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61604020763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544623 + ... + 647936.

It is an arithmetic number, because the mean of its divisors is an integer number (5230568160).

Almost surely, 2^61604020263 is an apocalyptic number.

61604020263 is a deficient number, since it is larger than the sum of its proper divisors (22085070297).

61604020263 is a wasteful number, since it uses less digits than its factorization.

61604020263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192886.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 61604020263 its reverse (36202040616), we get a palindrome (97806060879).

The spelling of 61604020263 in words is "sixty-one billion, six hundred four million, twenty thousand, two hundred sixty-three".