51551076352 has 68 divisors (see below), whose sum is σ = 109168511616. Its totient is φ = 24258805760.

The previous prime is 51551076337. The next prime is 51551076371. The reversal of 51551076352 is 25367015515.

It is a tau number, because it is divible by the number of its divisors (68).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090977 + ... + 1137247.

Almost surely, 2^51551076352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51551076352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54584255808).

51551076352 is an abundant number, since it is smaller than the sum of its proper divisors (57617435264).

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

51551076352 is an frugal number, since it uses more digits than its factorization.

51551076352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46320 (or 46290 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 40.

The spelling of 51551076352 in words is "fifty-one billion, five hundred fifty-one million, seventy-six thousand, three hundred fifty-two".