51010605555450 has 192 divisors, whose sum is σ = 127889302775040. Its totient is φ = 13455015874560.

The previous prime is 51010605555443. The next prime is 51010605555463. The reversal of 51010605555450 is 5455550601015.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11130393859 + ... + 11130398441.

It is an arithmetic number, because the mean of its divisors is an integer number (666090118620).

Almost surely, 2^{51010605555450} is an apocalyptic number.

51010605555450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51010605555450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63944651387520).

51010605555450 is an abundant number, since it is smaller than the sum of its proper divisors (76878697219590).

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

51010605555450 is a wasteful number, since it uses less digits than its factorization.

51010605555450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873 (or 6868 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 42.

The spelling of 51010605555450 in words is "fifty-one trillion, ten billion, six hundred five million, five hundred fifty-five thousand, four hundred fifty".