5451651486638 has 32 divisors (see below), whose sum is σ = 9752222002176. Its totient is φ = 2234792786688.

The previous prime is 5451651486637. The next prime is 5451651486649. The reversal of 5451651486638 is 8366841561545.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451651486637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18826295 + ... + 19113677.

It is an arithmetic number, because the mean of its divisors is an integer number (304756937568).

Almost surely, 2^{5451651486638} is an apocalyptic number.

5451651486638 is a deficient number, since it is larger than the sum of its proper divisors (4300570515538).

5451651486638 is a wasteful number, since it uses less digits than its factorization.

5451651486638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346328.

The product of its digits is 82944000, while the sum is 62.

The spelling of 5451651486638 in words is "five trillion, four hundred fifty-one billion, six hundred fifty-one million, four hundred eighty-six thousand, six hundred thirty-eight".