780101449836 has 192 divisors, whose sum is σ = 1986079979520. Its totient is φ = 237522862080.

The previous prime is 780101449819. The next prime is 780101449849. The reversal of 780101449836 is 638944101087.

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, 242190706 + ... + 242193926.

It is an arithmetic number, because the mean of its divisors is an integer number (10344166560).

Almost surely, 2^780101449836 is an apocalyptic number.

780101449836 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780101449836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (993039989760).

780101449836 is an abundant number, since it is smaller than the sum of its proper divisors (1205978529684).

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

780101449836 is a wasteful number, since it uses less digits than its factorization.

780101449836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 780101449836 in words is "seven hundred eighty billion, one hundred one million, four hundred forty-nine thousand, eight hundred thirty-six".