61603616236 has 6 divisors (see below), whose sum is σ = 107806328420. Its totient is φ = 30801808116.

The previous prime is 61603616213. The next prime is 61603616273. The reversal of 61603616236 is 63261630616.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7700452026 + ... + 7700452033.

Almost surely, 2^61603616236 is an apocalyptic number.

It is an amenable number.

61603616236 is a deficient number, since it is larger than the sum of its proper divisors (46202712184).

61603616236 is a wasteful number, since it uses less digits than its factorization.

61603616236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15400904063 (or 15400904061 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 61603616236 in words is "sixty-one billion, six hundred three million, six hundred sixteen thousand, two hundred thirty-six".