2533373640 has 384 divisors, whose sum is σ = 9933580800. Its totient is φ = 547430400.

The previous prime is 2533373639. The next prime is 2533373651. The reversal of 2533373640 is 463733352.

2533373640 is a `hidden beast` number, since 2 + 5 + 3 + 3 + 3 + 7 + 3 + 640 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2533373595 and 2533373604.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6317440 + ... + 6317840.

It is an arithmetic number, because the mean of its divisors is an integer number (25868700).

Almost surely, 2^2533373640 is an apocalyptic number.

2533373640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2533373640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4966790400).

2533373640 is an abundant number, since it is smaller than the sum of its proper divisors (7400207160).

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

2533373640 is a wasteful number, since it uses less digits than its factorization.

2533373640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 36.

The square root of 2533373640 is about 50332.6299730106. The cubic root of 2533373640 is about 1363.2214650004.

The spelling of 2533373640 in words is "two billion, five hundred thirty-three million, three hundred seventy-three thousand, six hundred forty".