51048402000 has 160 divisors (see below), whose sum is σ = 173242542720. Its totient is φ = 12896409600.

The previous prime is 51048401969. The next prime is 51048402037. The reversal of 51048402000 is 20484015.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109897 + ... + 337896.

It is an arithmetic number, because the mean of its divisors is an integer number (1082765892).

Almost surely, 2^51048402000 is an apocalyptic number.

51048402000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51048402000 is an abundant number, since it is smaller than the sum of its proper divisors (122194140720).

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

51048402000 is a wasteful number, since it uses less digits than its factorization.

51048402000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447838 (or 447822 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 51048402000 its reverse (20484015), we get a palindrome (51068886015).

The spelling of 51048402000 in words is "fifty-one billion, forty-eight million, four hundred two thousand".