51605742603 has 8 divisors (see below), whose sum is σ = 68809159888. Its totient is φ = 34403076864.

The previous prime is 51605742599. The next prime is 51605742611. The reversal of 51605742603 is 30624750615.

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

It is not a de Polignac number, because 51605742603 - 2² = 51605742599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51605742673) 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, 1150 + ... + 321267.

It is an arithmetic number, because the mean of its divisors is an integer number (8601144986).

Almost surely, 2^51605742603 is an apocalyptic number.

51605742603 is a deficient number, since it is larger than the sum of its proper divisors (17203417285).

51605742603 is a wasteful number, since it uses less digits than its factorization.

51605742603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375773.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 51605742603 in words is "fifty-one billion, six hundred five million, seven hundred forty-two thousand, six hundred three".