51023253543 has 8 divisors (see below), whose sum is σ = 71611584000. Its totient is φ = 32225212728.

The previous prime is 51023253529. The next prime is 51023253553. The reversal of 51023253543 is 34535232015.

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

It is not a de Polignac number, because 51023253543 - 2¹⁰ = 51023252519 is a prime.

It is a super-2 number, since 2×51023253543² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023253553) 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, 447572343 + ... + 447572456.

It is an arithmetic number, because the mean of its divisors is an integer number (8951448000).

Almost surely, 2^51023253543 is an apocalyptic number.

51023253543 is a deficient number, since it is larger than the sum of its proper divisors (20588330457).

51023253543 is a wasteful number, since it uses less digits than its factorization.

51023253543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895144821.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 51023253543 its reverse (34535232015), we get a palindrome (85558485558).

The spelling of 51023253543 in words is "fifty-one billion, twenty-three million, two hundred fifty-three thousand, five hundred forty-three".