5641631451 has 20 divisors (see below), whose sum is σ = 8430820200. Its totient is φ = 3759660576.

The previous prime is 5641631423. The next prime is 5641631461. The reversal of 5641631451 is 1541361465.

5641631451 is a `hidden beast` number, since 5 + 641 + 6 + 3 + 1 + 4 + 5 + 1 = 666.

It is not a de Polignac number, because 5641631451 - 2¹⁷ = 5641500379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5641631461) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 228760 + ... + 252218.

It is an arithmetic number, because the mean of its divisors is an integer number (421541010).

Almost surely, 2^5641631451 is an apocalyptic number.

5641631451 is a deficient number, since it is larger than the sum of its proper divisors (2789188749).

5641631451 is a wasteful number, since it uses less digits than its factorization.

5641631451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26440 (or 26431 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 5641631451 is about 75110.7945038528. The cubic root of 5641631451 is about 1780.1977067566.

The spelling of 5641631451 in words is "five billion, six hundred forty-one million, six hundred thirty-one thousand, four hundred fifty-one".