61602756851 has 16 divisors (see below), whose sum is σ = 63071167104. Its totient is φ = 60146171904.

The previous prime is 61602756841. The next prime is 61602756883. The reversal of 61602756851 is 15865720616.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61602756851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61602756796 and 61602756805.

It is not an unprimeable number, because it can be changed into a prime (61602756811) 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, 21560615 + ... + 21563471.

It is an arithmetic number, because the mean of its divisors is an integer number (3941947944).

Almost surely, 2^61602756851 is an apocalyptic number.

61602756851 is a deficient number, since it is larger than the sum of its proper divisors (1468410253).

61602756851 is a wasteful number, since it uses less digits than its factorization.

61602756851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 61602756851 in words is "sixty-one billion, six hundred two million, seven hundred fifty-six thousand, eight hundred fifty-one".