51323746400 has 72 divisors (see below), whose sum is σ = 126510746544. Its totient is φ = 20330150400.

The previous prime is 51323746381. The next prime is 51323746403. The reversal of 51323746400 is 464732315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51323746403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229031 + ... + 393830.

It is an arithmetic number, because the mean of its divisors is an integer number (1757093702).

Almost surely, 2^51323746400 is an apocalyptic number.

51323746400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51323746400 is an abundant number, since it is smaller than the sum of its proper divisors (75187000144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51323746400 is a wasteful number, since it uses less digits than its factorization.

51323746400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622984 (or 622971 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 51323746400 in words is "fifty-one billion, three hundred twenty-three million, seven hundred forty-six thousand, four hundred".