51219465432 has 64 divisors (see below), whose sum is σ = 128899330560. Its totient is φ = 16959945600.

The previous prime is 51219465421. The next prime is 51219465443. The reversal of 51219465432 is 23456491215.

It is an interprime number because it is at equal distance from previous prime (51219465421) and next prime (51219465443).

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, 4211953 + ... + 4224095.

It is an arithmetic number, because the mean of its divisors is an integer number (2014052040).

Almost surely, 2^51219465432 is an apocalyptic number.

It is an amenable number.

51219465432 is an abundant number, since it is smaller than the sum of its proper divisors (77679865128).

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

51219465432 is a wasteful number, since it uses less digits than its factorization.

51219465432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13304 (or 13300 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The spelling of 51219465432 in words is "fifty-one billion, two hundred nineteen million, four hundred sixty-five thousand, four hundred thirty-two".