2645513332550 has 72 divisors (see below), whose sum is σ = 5410324290000. Its totient is φ = 961707700800.

The previous prime is 2645513332537. The next prime is 2645513332621. The reversal of 2645513332550 is 552333155462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20014076 + ... + 20145824.

Almost surely, 2^{2645513332550} is an apocalyptic number.

2645513332550 is an abundant number, since it is smaller than the sum of its proper divisors (2764810957450).

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

2645513332550 is a wasteful number, since it uses less digits than its factorization.

2645513332550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135102 (or 135086 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 44.

The spelling of 2645513332550 in words is "two trillion, six hundred forty-five billion, five hundred thirteen million, three hundred thirty-two thousand, five hundred fifty".