51043350402 has 48 divisors (see below), whose sum is σ = 120771114048. Its totient is φ = 15451887840.

The previous prime is 51043350377. The next prime is 51043350409. The reversal of 51043350402 is 20405334015.

It is a super-2 number, since 2×51043350402² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51043350409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63508 + ... + 325760.

It is an arithmetic number, because the mean of its divisors is an integer number (2516064876).

Almost surely, 2^51043350402 is an apocalyptic number.

51043350402 is an abundant number, since it is smaller than the sum of its proper divisors (69727763646).

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

51043350402 is a wasteful number, since it uses less digits than its factorization.

51043350402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263255 (or 263252 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 51043350402 its reverse (20405334015), we get a palindrome (71448684417).

The spelling of 51043350402 in words is "fifty-one billion, forty-three million, three hundred fifty thousand, four hundred two".