51158810423501 has 4 divisors (see below), whose sum is σ = 55809611371104. Its totient is φ = 46508009475900.

The previous prime is 51158810423423. The next prime is 51158810423507. The reversal of 51158810423501 is 10532401885115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51158810423501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51158810423507) 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, 2325400473785 + ... + 2325400473806.

It is an arithmetic number, because the mean of its divisors is an integer number (13952402842776).

Almost surely, 2^{51158810423501} is an apocalyptic number.

It is an amenable number.

51158810423501 is a deficient number, since it is larger than the sum of its proper divisors (4650800947603).

51158810423501 is a wasteful number, since it uses less digits than its factorization.

51158810423501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650800947602.

The product of its (nonzero) digits is 192000, while the sum is 44.

The spelling of 51158810423501 in words is "fifty-one trillion, one hundred fifty-eight billion, eight hundred ten million, four hundred twenty-three thousand, five hundred one".