61634093553 has 6 divisors (see below), whose sum is σ = 89027024034. Its totient is φ = 41089395696.

The previous prime is 61634093539. The next prime is 61634093561. The reversal of 61634093553 is 35539043616.

61634093553 is a `hidden beast` number, since 6 + 1 + 6 + 3 + 4 + 0 + 93 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55416455649 + 6217637904 = 235407^2 + 78852^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61634093553 is a prime.

It is a super-2 number, since 2×61634093553² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61634093499 and 61634093508.

It is not an unprimeable number, because it can be changed into a prime (61634093593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3424116300 + ... + 3424116317.

It is an arithmetic number, because the mean of its divisors is an integer number (14837837339).

Almost surely, 2^61634093553 is an apocalyptic number.

It is an amenable number.

61634093553 is a deficient number, since it is larger than the sum of its proper divisors (27392930481).

61634093553 is a wasteful number, since it uses less digits than its factorization.

61634093553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848232623 (or 6848232620 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 45.

The spelling of 61634093553 in words is "sixty-one billion, six hundred thirty-four million, ninety-three thousand, five hundred fifty-three".