61656203325203 has 4 divisors (see below), whose sum is σ = 61656222658368. Its totient is φ = 61656183992040.

The previous prime is 61656203325193. The next prime is 61656203325229. The reversal of 61656203325203 is 30252330265616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61656203325203 - 2⁶ = 61656203325139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61656203325263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3623651 + ... + 11680892.

It is an arithmetic number, because the mean of its divisors is an integer number (15414055664592).

Almost surely, 2^{61656203325203} is an apocalyptic number.

61656203325203 is a deficient number, since it is larger than the sum of its proper divisors (19333165).

61656203325203 is a wasteful number, since it uses less digits than its factorization.

61656203325203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19333164.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 61656203325203 in words is "sixty-one trillion, six hundred fifty-six billion, two hundred three million, three hundred twenty-five thousand, two hundred three".