51351736451643 has 24 divisors (see below), whose sum is σ = 76349395918848. Its totient is φ = 33242269968432.

The previous prime is 51351736451621. The next prime is 51351736451647. The reversal of 51351736451643 is 34615463715315.

51351736451643 is a `hidden beast` number, since 5 + 1 + 3 + 51 + 7 + 36 + 4 + 516 + 43 = 666.

It is not a de Polignac number, because 51351736451643 - 2¹⁷ = 51351736320571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51351736451643.

It is not an unprimeable number, because it can be changed into a prime (51351736451647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477894721 + ... + 478002162.

It is an arithmetic number, because the mean of its divisors is an integer number (3181224829952).

Almost surely, 2^{51351736451643} is an apocalyptic number.

51351736451643 is a deficient number, since it is larger than the sum of its proper divisors (24997659467205).

51351736451643 is a wasteful number, since it uses less digits than its factorization.

51351736451643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955897063 (or 955897060 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 54.

The spelling of 51351736451643 in words is "fifty-one trillion, three hundred fifty-one billion, seven hundred thirty-six million, four hundred fifty-one thousand, six hundred forty-three".