61536525766761 has 16 divisors (see below), whose sum is σ = 82153619661888. Its totient is φ = 40971920932800.

The previous prime is 61536525766687. The next prime is 61536525766777. The reversal of 61536525766761 is 16766752563516.

It is a happy number.

It is not a de Polignac number, because 61536525766761 - 2¹⁹ = 61536525242473 is a prime.

It is a super-2 number, since 2×61536525766761² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61536525766692 and 61536525766701.

It is not an unprimeable number, because it can be changed into a prime (61536525366761) 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, 4564231 + ... + 11996051.

It is an arithmetic number, because the mean of its divisors is an integer number (5134601228868).

Almost surely, 2^{61536525766761} is an apocalyptic number.

It is an amenable number.

61536525766761 is a deficient number, since it is larger than the sum of its proper divisors (20617093895127).

61536525766761 is a wasteful number, since it uses less digits than its factorization.

61536525766761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7435352.

The product of its digits is 285768000, while the sum is 66.

The spelling of 61536525766761 in words is "sixty-one trillion, five hundred thirty-six billion, five hundred twenty-five million, seven hundred sixty-six thousand, seven hundred sixty-one".