2546621280 has 144 divisors (see below), whose sum is σ = 9931862304. Its totient is φ = 582082560.

The previous prime is 2546621261. The next prime is 2546621299. The reversal of 2546621280 is 821266452.

It is a happy number.

2546621280 is a `hidden beast` number, since 2 + 5 + 4 + 6 + 621 + 28 + 0 = 666.

2546621280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2546621261) and next prime (2546621299).

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116241 + ... + 136400.

It is an arithmetic number, because the mean of its divisors is an integer number (68971266).

Almost surely, 2^2546621280 is an apocalyptic number.

2546621280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2546621280 is an abundant number, since it is smaller than the sum of its proper divisors (7385241024).

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

2546621280 is a wasteful number, since it uses less digits than its factorization.

2546621280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252669 (or 252658 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 2546621280 is about 50464.0592897559. The cubic root of 2546621280 is about 1365.5935429430.

The spelling of 2546621280 in words is "two billion, five hundred forty-six million, six hundred twenty-one thousand, two hundred eighty".