51601367623 has 8 divisors (see below), whose sum is σ = 56062481328. Its totient is φ = 47210507904.

The previous prime is 51601367621. The next prime is 51601367647. The reversal of 51601367623 is 32676310615.

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

It is a cyclic number.

It is not a de Polignac number, because 51601367623 - 2¹ = 51601367621 is a prime.

It is a super-2 number, since 2×51601367623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601367621) 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, 17561965 + ... + 17564902.

It is an arithmetic number, because the mean of its divisors is an integer number (7007810166).

Almost surely, 2^51601367623 is an apocalyptic number.

51601367623 is a deficient number, since it is larger than the sum of its proper divisors (4461113705).

51601367623 is a wasteful number, since it uses less digits than its factorization.

51601367623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35126993.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 51601367623 in words is "fifty-one billion, six hundred one million, three hundred sixty-seven thousand, six hundred twenty-three".