51200546540 has 48 divisors (see below), whose sum is σ = 126318558240. Its totient is φ = 17186196480.

The previous prime is 51200546539. The next prime is 51200546543. The reversal of 51200546540 is 4564500215.

It is a junction number, because it is equal to n+sod(n) for n = 51200546497 and 51200546506.

It is not an unprimeable number, because it can be changed into a prime (51200546543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8948285 + ... + 8954004.

It is an arithmetic number, because the mean of its divisors is an integer number (2631636630).

Almost surely, 2^51200546540 is an apocalyptic number.

It is an amenable number.

51200546540 is an abundant number, since it is smaller than the sum of its proper divisors (75118011700).

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

51200546540 is a wasteful number, since it uses less digits than its factorization.

51200546540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17902322 (or 17902320 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 51200546540 in words is "fifty-one billion, two hundred million, five hundred forty-six thousand, five hundred forty".