51029230246 has 4 divisors (see below), whose sum is σ = 76543845372. Its totient is φ = 25514615122.

The previous prime is 51029230243. The next prime is 51029230247. The reversal of 51029230246 is 64203292015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64203292015 = 5 ⋅12840658403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51029230243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12757307560 + ... + 12757307563.

It is an arithmetic number, because the mean of its divisors is an integer number (19135961343).

Almost surely, 2^51029230246 is an apocalyptic number.

51029230246 is a deficient number, since it is larger than the sum of its proper divisors (25514615126).

51029230246 is a wasteful number, since it uses less digits than its factorization.

51029230246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514615125.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 51029230246 in words is "fifty-one billion, twenty-nine million, two hundred thirty thousand, two hundred forty-six".