2662136521044 has 288 divisors, whose sum is σ = 8935848230400. Its totient is φ = 604680733440.

The previous prime is 2662136521027. The next prime is 2662136521069. The reversal of 2662136521044 is 4401256312662.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2662136520987 and 2662136521005.

It is a congruent number.

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, 764427 + ... + 2430765.

It is an arithmetic number, because the mean of its divisors is an integer number (31027250800).

Almost surely, 2^{2662136521044} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2662136521044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4467924115200).

2662136521044 is an abundant number, since it is smaller than the sum of its proper divisors (6273711709356).

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

2662136521044 is a wasteful number, since it uses less digits than its factorization.

2662136521044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666403 (or 1666394 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 2662136521044 in words is "two trillion, six hundred sixty-two billion, one hundred thirty-six million, five hundred twenty-one thousand, forty-four".