2455642620 has 72 divisors (see below), whose sum is σ = 7550861136. Its totient is φ = 645864192.

The previous prime is 2455642601. The next prime is 2455642621. The reversal of 2455642620 is 262465542.

2455642620 is a `hidden beast` number, since 2 + 4 + 5 + 5 + 642 + 6 + 2 + 0 = 666.

2455642620 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455642621) 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, 80302 + ... + 106581.

Almost surely, 2^2455642620 is an apocalyptic number.

2455642620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2455642620 is an abundant number, since it is smaller than the sum of its proper divisors (5095218516).

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

2455642620 is a wasteful number, since it uses less digits than its factorization.

2455642620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186971 (or 186966 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 2455642620 is about 49554.4409715214. The cubic root of 2455642620 is about 1349.1338971388.

It can be divided in two parts, 24556 and 42620, that added together give a palindrome (67176).

The spelling of 2455642620 in words is "two billion, four hundred fifty-five million, six hundred forty-two thousand, six hundred twenty".