61125130500 has 96 divisors (see below), whose sum is σ = 203424469248. Its totient is φ = 13971456000.

The previous prime is 61125130447. The next prime is 61125130511. The reversal of 61125130500 is 503152116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2900221 + ... + 2921220.

It is an arithmetic number, because the mean of its divisors is an integer number (2119004888).

Almost surely, 2^61125130500 is an apocalyptic number.

61125130500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61125130500 is an abundant number, since it is smaller than the sum of its proper divisors (142299338748).

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

61125130500 is a wasteful number, since it uses less digits than its factorization.

61125130500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821470 (or 5821458 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 61125130500 its reverse (503152116), we get a palindrome (61628282616).

The spelling of 61125130500 in words is "sixty-one billion, one hundred twenty-five million, one hundred thirty thousand, five hundred".