2308406781630 has 128 divisors (see below), whose sum is σ = 6013574784000. Its totient is φ = 565183872000.

The previous prime is 2308406781623. The next prime is 2308406781641. The reversal of 2308406781630 is 361876048032.

It is a self number, because there is not a number n which added to its sum of digits gives 2308406781630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3201796 + ... + 3855944.

It is an arithmetic number, because the mean of its divisors is an integer number (46981053000).

Almost surely, 2^{2308406781630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2308406781630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3006787392000).

2308406781630 is an abundant number, since it is smaller than the sum of its proper divisors (3705168002370).

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

2308406781630 is a wasteful number, since it uses less digits than its factorization.

2308406781630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654370.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 2308406781630 in words is "two trillion, three hundred eight billion, four hundred six million, seven hundred eighty-one thousand, six hundred thirty".