61603753443 has 8 divisors (see below), whose sum is σ = 84787961856. Its totient is φ = 39744357000.

The previous prime is 61603753399. The next prime is 61603753457. The reversal of 61603753443 is 34435730616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61603753443 - 2²⁶ = 61536644579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61603753395 and 61603753404.

It is not an unprimeable number, because it can be changed into a prime (61603553443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331202883 + ... + 331203068.

It is an arithmetic number, because the mean of its divisors is an integer number (10598495232).

Almost surely, 2^61603753443 is an apocalyptic number.

61603753443 is a deficient number, since it is larger than the sum of its proper divisors (23184208413).

61603753443 is a wasteful number, since it uses less digits than its factorization.

61603753443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662405985.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 61603753443 in words is "sixty-one billion, six hundred three million, seven hundred fifty-three thousand, four hundred forty-three".