253542541420 has 36 divisors (see below), whose sum is σ = 619368210720. Its totient is φ = 86928871008.

The previous prime is 253542541393. The next prime is 253542541423. The reversal of 253542541420 is 24145245352.

It is a self number, because there is not a number n which added to its sum of digits gives 253542541420.

It is not an unprimeable number, because it can be changed into a prime (253542541423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129357460 + ... + 129359419.

It is an arithmetic number, because the mean of its divisors is an integer number (17204672520).

Almost surely, 2^253542541420 is an apocalyptic number.

253542541420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253542541420 is an abundant number, since it is smaller than the sum of its proper divisors (365825669300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253542541420 is a wasteful number, since it uses less digits than its factorization.

253542541420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258716902 (or 258716893 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 253542541420 its reverse (24145245352), we get a palindrome (277687786772).

The spelling of 253542541420 in words is "two hundred fifty-three billion, five hundred forty-two million, five hundred forty-one thousand, four hundred twenty".