123796861650 has 768 divisors, whose sum is σ = 450211184640. Its totient is φ = 24261120000.

The previous prime is 123796861649. The next prime is 123796861663. The reversal of 123796861650 is 56168697321.

123796861650 is a `hidden beast` number, since 12 + 3 + 7 + 9 + 6 + 8 + 616 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 132119982 + ... + 132120918.

It is an arithmetic number, because the mean of its divisors is an integer number (586212480).

Almost surely, 2^123796861650 is an apocalyptic number.

123796861650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123796861650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225105592320).

123796861650 is an abundant number, since it is smaller than the sum of its proper divisors (326414322990).

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

123796861650 is a wasteful number, since it uses less digits than its factorization.

123796861650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 123796861650 in words is "one hundred twenty-three billion, seven hundred ninety-six million, eight hundred sixty-one thousand, six hundred fifty".