245420215155040 has 48 divisors (see below), whose sum is σ = 586319924161440. Its totient is φ = 97065073853440.

The previous prime is 245420215155029. The next prime is 245420215155067. The reversal of 245420215155040 is 40551512024542.

It is a super-2 number, since 2×245420215155040² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 245420215154984 and 245420215155002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8617268596 + ... + 8617297075.

It is an arithmetic number, because the mean of its divisors is an integer number (12214998420030).

Almost surely, 2^{245420215155040} is an apocalyptic number.

245420215155040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245420215155040 is an abundant number, since it is smaller than the sum of its proper divisors (340899709006400).

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

245420215155040 is a wasteful number, since it uses less digits than its factorization.

245420215155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17234565775 (or 17234565767 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 40.

Adding to 245420215155040 its reverse (40551512024542), we get a palindrome (285971727179582).

The spelling of 245420215155040 in words is "two hundred forty-five trillion, four hundred twenty billion, two hundred fifteen million, one hundred fifty-five thousand, forty".