61251817248 has 96 divisors (see below), whose sum is σ = 178722673920. Its totient is φ = 20409096960.

The previous prime is 61251817243. The next prime is 61251817259. The reversal of 61251817248 is 84271815216.

61251817248 is a `hidden beast` number, since 61 + 2 + 518 + 1 + 72 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (61251817243) 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, 2377878 + ... + 2403498.

It is an arithmetic number, because the mean of its divisors is an integer number (1861694520).

Almost surely, 2^61251817248 is an apocalyptic number.

It is an amenable number.

61251817248 is an abundant number, since it is smaller than the sum of its proper divisors (117470856672).

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

61251817248 is a wasteful number, since it uses less digits than its factorization.

61251817248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28407 (or 28393 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The spelling of 61251817248 in words is "sixty-one billion, two hundred fifty-one million, eight hundred seventeen thousand, two hundred forty-eight".