5401643655 has 16 divisors (see below), whose sum is σ = 8645915520. Its totient is φ = 2879781408.

The previous prime is 5401643641. The next prime is 5401643707. The reversal of 5401643655 is 5563461045.

It is not a de Polignac number, because 5401643655 - 2¹⁸ = 5401381511 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26865 + ... + 107354.

It is an arithmetic number, because the mean of its divisors is an integer number (540369720).

Almost surely, 2^5401643655 is an apocalyptic number.

5401643655 is a deficient number, since it is larger than the sum of its proper divisors (3244271865).

5401643655 is a wasteful number, since it uses less digits than its factorization.

5401643655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136910.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 5401643655 is about 73495.8750883340. The cubic root of 5401643655 is about 1754.5886276993.

The spelling of 5401643655 in words is "five billion, four hundred one million, six hundred forty-three thousand, six hundred fifty-five".