253604656543 has 32 divisors (see below), whose sum is σ = 295318016000. Its totient is φ = 213296115456.

The previous prime is 253604656523. The next prime is 253604656567. The reversal of 253604656543 is 345656406352.

It is a cyclic number.

It is not a de Polignac number, because 253604656543 - 2¹³ = 253604648351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253604656523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93269938 + ... + 93272656.

It is an arithmetic number, because the mean of its divisors is an integer number (9228688000).

Almost surely, 2^253604656543 is an apocalyptic number.

253604656543 is a deficient number, since it is larger than the sum of its proper divisors (41713359457).

253604656543 is a wasteful number, since it uses less digits than its factorization.

253604656543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671.

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 253604656543 in words is "two hundred fifty-three billion, six hundred four million, six hundred fifty-six thousand, five hundred forty-three".