51567993280000 has 100 divisors (see below), whose sum is σ = 128752871470740. Its totient is φ = 20627197184000.

The previous prime is 51567993279967. The next prime is 51567993280003. The reversal of 51567993280000 is 8239976515.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×51567993280000² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51567993280003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 80254990 + ... + 80894989.

Almost surely, 2^{51567993280000} is an apocalyptic number.

51567993280000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51567993280000 is an abundant number, since it is smaller than the sum of its proper divisors (77184878190740).

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

51567993280000 is an frugal number, since it uses more digits than its factorization.

51567993280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161150017 (or 161149986 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 51567993280000 in words is "fifty-one trillion, five hundred sixty-seven billion, nine hundred ninety-three million, two hundred eighty thousand".