1202778870400 has 384 divisors, whose sum is σ = 3146741452800. Its totient is φ = 453648384000.

The previous prime is 1202778870379. The next prime is 1202778870407. The reversal of 1202778870400 is 40788772021.

It is a super-2 number, since 2×1202778870400² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1202778870407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 683784721 + ... + 683786479.

It is an arithmetic number, because the mean of its divisors is an integer number (8194639200).

Almost surely, 2^{1202778870400} is an apocalyptic number.

1202778870400 is a gapful number since it is divisible by the number (10) 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 1202778870400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573370726400).

1202778870400 is an abundant number, since it is smaller than the sum of its proper divisors (1943962582400).

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

1202778870400 is a wasteful number, since it uses less digits than its factorization.

1202778870400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1971 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 46.

The spelling of 1202778870400 in words is "one trillion, two hundred two billion, seven hundred seventy-eight million, eight hundred seventy thousand, four hundred".