2631648101808 has 160 divisors (see below), whose sum is σ = 7819682365440. Its totient is φ = 754250676480.

The previous prime is 2631648101791. The next prime is 2631648101987. The reversal of 2631648101808 is 8081018461362.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5873341 + ... + 6305507.

It is an arithmetic number, because the mean of its divisors is an integer number (48873014784).

Almost surely, 2^{2631648101808} 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 2631648101808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3909841182720).

2631648101808 is an abundant number, since it is smaller than the sum of its proper divisors (5188034263632).

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

2631648101808 is a wasteful number, since it uses less digits than its factorization.

2631648101808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432815 (or 432809 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 2631648101808 in words is "two trillion, six hundred thirty-one billion, six hundred forty-eight million, one hundred one thousand, eight hundred eight".