51209767470 has 32 divisors (see below), whose sum is σ = 122914392192. Its totient is φ = 13654721312.

The previous prime is 51209767447. The next prime is 51209767481. The reversal of 51209767470 is 7476790215.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 296149 + ... + 436031.

It is an arithmetic number, because the mean of its divisors is an integer number (3841074756).

Almost surely, 2^51209767470 is an apocalyptic number.

51209767470 is an abundant number, since it is smaller than the sum of its proper divisors (71704624722).

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

51209767470 is a wasteful number, since it uses less digits than its factorization.

51209767470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152096.

The product of its (nonzero) digits is 740880, while the sum is 48.

The spelling of 51209767470 in words is "fifty-one billion, two hundred nine million, seven hundred sixty-seven thousand, four hundred seventy".