51001504144000 has 128 divisors (see below), whose sum is σ = 127714743374400. Its totient is φ = 20253833856000.

The previous prime is 51001504143937. The next prime is 51001504144013. The reversal of 51001504144000 is 44140510015.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9242166 + ... + 13690165.

Almost surely, 2^{51001504144000} is an apocalyptic number.

51001504144000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51001504144000 is an abundant number, since it is smaller than the sum of its proper divisors (76713239230400).

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

51001504144000 is a wasteful number, since it uses less digits than its factorization.

51001504144000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22932499 (or 22932477 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 51001504144000 its reverse (44140510015), we get a palindrome (51045644654015).

The spelling of 51001504144000 in words is "fifty-one trillion, one billion, five hundred four million, one hundred forty-four thousand".