51471042975 has 240 divisors, whose sum is σ = 108374492160. Its totient is φ = 23924160000.

The previous prime is 51471042971. The next prime is 51471042989. The reversal of 51471042975 is 57924017415.

51471042975 is a `hidden beast` number, since 5 + 147 + 10 + 429 + 75 = 666.

It is not a de Polignac number, because 51471042975 - 2² = 51471042971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51471042975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51471042971) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 90458491 + ... + 90459059.

It is an arithmetic number, because the mean of its divisors is an integer number (451560384).

Almost surely, 2^51471042975 is an apocalyptic number.

51471042975 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51471042975 is an abundant number, since it is smaller than the sum of its proper divisors (56903449185).

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

51471042975 is a wasteful number, since it uses less digits than its factorization.

51471042975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 51471042975 in words is "fifty-one billion, four hundred seventy-one million, forty-two thousand, nine hundred seventy-five".