245400511440 has 160 divisors (see below), whose sum is σ = 869563201536. Its totient is φ = 56082240000.

The previous prime is 245400511403. The next prime is 245400511441. The reversal of 245400511440 is 44115004542.

It is a super-2 number, since 2×245400511440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 245400511398 and 245400511407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245400511441) 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, 18895189 + ... + 18908171.

Almost surely, 2^245400511440 is an apocalyptic number.

245400511440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245400511440 is an abundant number, since it is smaller than the sum of its proper divisors (624162690096).

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

245400511440 is a wasteful number, since it uses less digits than its factorization.

245400511440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24257 (or 24251 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 245400511440 its reverse (44115004542), we get a palindrome (289515515982).

The spelling of 245400511440 in words is "two hundred forty-five billion, four hundred million, five hundred eleven thousand, four hundred forty".