51485402012000 has 192 divisors, whose sum is σ = 140059302888960. Its totient is φ = 18442531008000.

The previous prime is 51485402011999. The next prime is 51485402012029. The reversal of 51485402012000 is 21020458415.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5784260 + ... + 11680259.

It is an arithmetic number, because the mean of its divisors is an integer number (729475535880).

Almost surely, 2^{51485402012000} is an apocalyptic number.

51485402012000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51485402012000 is an abundant number, since it is smaller than the sum of its proper divisors (88573900876960).

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

51485402012000 is a wasteful number, since it uses less digits than its factorization.

51485402012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17464622 (or 17464604 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 51485402012000 in words is "fifty-one trillion, four hundred eighty-five billion, four hundred two million, twelve thousand".