61654262653 has 8 divisors (see below), whose sum is σ = 63783790200. Its totient is φ = 59524969728.

The previous prime is 61654262617. The next prime is 61654262669. The reversal of 61654262653 is 35626245616.

It can be written as a sum of positive squares in 4 ways, for example, as 32875854489 + 28778408164 = 181317^2 + 169642^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61654262653 is a prime.

It is a super-2 number, since 2×61654262653² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61654269653) 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, 602425 + ... + 697297.

It is an arithmetic number, because the mean of its divisors is an integer number (7972973775).

Almost surely, 2^61654262653 is an apocalyptic number.

It is an amenable number.

61654262653 is a deficient number, since it is larger than the sum of its proper divisors (2129527547).

61654262653 is a wasteful number, since it uses less digits than its factorization.

61654262653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117311.

The product of its digits is 1555200, while the sum is 46.

It can be divided in two parts, 616542 and 62653, that added together give a triangular number (679195 = T₁₁₆₅).

The spelling of 61654262653 in words is "sixty-one billion, six hundred fifty-four million, two hundred sixty-two thousand, six hundred fifty-three".