55661746361451 has 64 divisors (see below), whose sum is σ = 80425866608640. Its totient is φ = 34114281062400.

The previous prime is 55661746361407. The next prime is 55661746361477. The reversal of 55661746361451 is 15416364716655.

It is not a de Polignac number, because 55661746361451 - 2¹⁷ = 55661746230379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55661746361251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 819714601 + ... + 819782501.

It is an arithmetic number, because the mean of its divisors is an integer number (1256654165760).

Almost surely, 2^{55661746361451} is an apocalyptic number.

55661746361451 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55661746361451 is a deficient number, since it is larger than the sum of its proper divisors (24764120247189).

55661746361451 is a wasteful number, since it uses less digits than its factorization.

55661746361451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70004.

The product of its digits is 54432000, while the sum is 60.

The spelling of 55661746361451 in words is "fifty-five trillion, six hundred sixty-one billion, seven hundred forty-six million, three hundred sixty-one thousand, four hundred fifty-one".