51402050211552 has 24 divisors (see below), whose sum is σ = 134930381805576. Its totient is φ = 17134016737152.

The previous prime is 51402050211539. The next prime is 51402050211557. The reversal of 51402050211552 is 25511205020415.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51402050211557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267719011423 + ... + 267719011614.

It is an arithmetic number, because the mean of its divisors is an integer number (5622099241899).

Almost surely, 2^{51402050211552} is an apocalyptic number.

It is an amenable number.

51402050211552 is an abundant number, since it is smaller than the sum of its proper divisors (83528331594024).

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

51402050211552 is a wasteful number, since it uses less digits than its factorization.

51402050211552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535438023050 (or 535438023042 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 51402050211552 its reverse (25511205020415), we get a palindrome (76913255231967).

The spelling of 51402050211552 in words is "fifty-one trillion, four hundred two billion, fifty million, two hundred eleven thousand, five hundred fifty-two".