51156302294 has 4 divisors (see below), whose sum is σ = 76734453444. Its totient is φ = 25578151146.

The previous prime is 51156302293. The next prime is 51156302317. The reversal of 51156302294 is 49220365115.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51156302291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789075572 + ... + 12789075575.

It is an arithmetic number, because the mean of its divisors is an integer number (19183613361).

Almost surely, 2^51156302294 is an apocalyptic number.

51156302294 is a deficient number, since it is larger than the sum of its proper divisors (25578151150).

51156302294 is a wasteful number, since it uses less digits than its factorization.

51156302294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25578151149.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 51156302294 in words is "fifty-one billion, one hundred fifty-six million, three hundred two thousand, two hundred ninety-four".