61662062953 has 4 divisors (see below), whose sum is σ = 61706974788. Its totient is φ = 61617151120.

The previous prime is 61662062947. The next prime is 61662062963. The reversal of 61662062953 is 35926026616.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55626637609 + 6035425344 = 235853^2 + 77688^2 .

It is a cyclic number.

It is not a de Polignac number, because 61662062953 - 2⁵ = 61662062921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61662062923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22453858 + ... + 22456603.

It is an arithmetic number, because the mean of its divisors is an integer number (15426743697).

Almost surely, 2^61662062953 is an apocalyptic number.

It is an amenable number.

61662062953 is a deficient number, since it is larger than the sum of its proper divisors (44911835).

61662062953 is a wasteful number, since it uses less digits than its factorization.

61662062953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44911834.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 61662062953 in words is "sixty-one billion, six hundred sixty-two million, sixty-two thousand, nine hundred fifty-three".