61636736452 has 12 divisors (see below), whose sum is σ = 107903804176. Its totient is φ = 30807078120.

The previous prime is 61636736429. The next prime is 61636736467. The reversal of 61636736452 is 25463763616.

It is a junction number, because it is equal to n+sod(n) for n = 61636736396 and 61636736405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2810238 + ... + 2832085.

Almost surely, 2^61636736452 is an apocalyptic number.

It is an amenable number.

61636736452 is a deficient number, since it is larger than the sum of its proper divisors (46267067724).

61636736452 is a wasteful number, since it uses less digits than its factorization.

61636736452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5645058 (or 5645056 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 49.

The spelling of 61636736452 in words is "sixty-one billion, six hundred thirty-six million, seven hundred thirty-six thousand, four hundred fifty-two".