51488170352840 has 128 divisors (see below), whose sum is σ = 128697657822720. Its totient is φ = 18420265036800.

The previous prime is 51488170352809. The next prime is 51488170352869. The reversal of 51488170352840 is 4825307188415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9988256 + ... + 14238735.

It is an arithmetic number, because the mean of its divisors is an integer number (1005450451740).

Almost surely, 2^{51488170352840} is an apocalyptic number.

It is an amenable number.

51488170352840 is an abundant number, since it is smaller than the sum of its proper divisors (77209487469880).

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

51488170352840 is a wasteful number, since it uses less digits than its factorization.

51488170352840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24227143 (or 24227139 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 56.

The spelling of 51488170352840 in words is "fifty-one trillion, four hundred eighty-eight billion, one hundred seventy million, three hundred fifty-two thousand, eight hundred forty".