51690771580380 has 24 divisors (see below), whose sum is σ = 144734160425232. Its totient is φ = 13784205754752.

The previous prime is 51690771580361. The next prime is 51690771580397. The reversal of 51690771580380 is 8308517709615.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 861512859673 = 51690771580380 / (5 + 1 + 6 + 9 + 0 + 7 + 7 + 1 + 5 + 8 + 0 + 3 + 8 + 0).

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 7 ways as a sum of consecutive naturals, for example, 430756429777 + ... + 430756429896.

It is an arithmetic number, because the mean of its divisors is an integer number (6030590017718).

Almost surely, 2^{51690771580380} is an apocalyptic number.

It is an amenable number.

51690771580380 is an abundant number, since it is smaller than the sum of its proper divisors (93043388844852).

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

51690771580380 is a wasteful number, since it uses less digits than its factorization.

51690771580380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861512859685 (or 861512859683 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 60.

The spelling of 51690771580380 in words is "fifty-one trillion, six hundred ninety billion, seven hundred seventy-one million, five hundred eighty thousand, three hundred eighty".