51520110000 has 100 divisors (see below), whose sum is σ = 166313881272. Its totient is φ = 13738688000.

The previous prime is 51520109983. The next prime is 51520110007. The reversal of 51520110000 is 1102515.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (51520110007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 828669 + ... + 888668.

Almost surely, 2^51520110000 is an apocalyptic number.

51520110000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51520110000 is an abundant number, since it is smaller than the sum of its proper divisors (114793771272).

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

51520110000 is a wasteful number, since it uses less digits than its factorization.

51520110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717368 (or 1717347 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

Adding to 51520110000 its reverse (1102515), we get a palindrome (51521212515).

The spelling of 51520110000 in words is "fifty-one billion, five hundred twenty million, one hundred ten thousand".