2534521450640 has 80 divisors (see below), whose sum is σ = 5983736985072. Its totient is φ = 998263160832.

The previous prime is 2534521450603. The next prime is 2534521450661. The reversal of 2534521450640 is 460541254352.

It can be written as a sum of positive squares in 8 ways, for example, as 4882096384 + 2529639354256 = 69872^2 + 1590484^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699752 + ... + 2357688.

Almost surely, 2^{2534521450640} is an apocalyptic number.

2534521450640 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 2534521450640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2991868492536).

2534521450640 is an abundant number, since it is smaller than the sum of its proper divisors (3449215534432).

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

2534521450640 is a wasteful number, since it uses less digits than its factorization.

2534521450640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658244 (or 1658238 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 2534521450640 in words is "two trillion, five hundred thirty-four billion, five hundred twenty-one million, four hundred fifty thousand, six hundred forty".