1234859664654 has 216 divisors, whose sum is σ = 3424192448040. Its totient is φ = 320444752320.

The previous prime is 1234859664637. The next prime is 1234859664691. The reversal of 1234859664654 is 4564669584321.

It is a happy number.

1234859664654 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 85 + 96 + 6 + 465 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 1234859664591 and 1234859664600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 129449017 + ... + 129458555.

It is an arithmetic number, because the mean of its divisors is an integer number (15852742815).

Almost surely, 2^{1234859664654} is an apocalyptic number.

1234859664654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234859664654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712096224020).

1234859664654 is an abundant number, since it is smaller than the sum of its proper divisors (2189332783386).

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

1234859664654 is a wasteful number, since it uses less digits than its factorization.

1234859664654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10796 (or 10775 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 63.

The spelling of 1234859664654 in words is "one trillion, two hundred thirty-four billion, eight hundred fifty-nine million, six hundred sixty-four thousand, six hundred fifty-four".