253980455553 has 24 divisors (see below), whose sum is σ = 410487500640. Its totient is φ = 153922285080.

The previous prime is 253980455507. The next prime is 253980455557. The reversal of 253980455553 is 355554089352.

253980455553 is a `hidden beast` number, since 2 + 5 + 3 + 9 + 80 + 4 + 5 + 5 + 553 = 666.

It is not a de Polignac number, because 253980455553 - 2⁹ = 253980455041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253980455553.

It is not an unprimeable number, because it can be changed into a prime (253980455557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8670550 + ... + 8699792.

It is an arithmetic number, because the mean of its divisors is an integer number (17103645860).

Almost surely, 2^253980455553 is an apocalyptic number.

It is an amenable number.

253980455553 is a deficient number, since it is larger than the sum of its proper divisors (156507045087).

253980455553 is an frugal number, since it uses more digits than its factorization.

253980455553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58506 (or 29257 counting only the distinct ones).

The product of its (nonzero) digits is 16200000, while the sum is 54.

The spelling of 253980455553 in words is "two hundred fifty-three billion, nine hundred eighty million, four hundred fifty-five thousand, five hundred fifty-three".