1216377703400 has 48 divisors (see below), whose sum is σ = 2828232558540. Its totient is φ = 486524518400.

The previous prime is 1216377703393. The next prime is 1216377703433. The reversal of 1216377703400 is 43077736121.

It can be written as a sum of positive squares in 6 ways, for example, as 1045747573924 + 170630129476 = 1022618^2 + 413074^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3735110 + ... + 4047690.

Almost surely, 2^{1216377703400} is an apocalyptic number.

1216377703400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216377703400 is an abundant number, since it is smaller than the sum of its proper divisors (1611854855140).

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

1216377703400 is a wasteful number, since it uses less digits than its factorization.

1216377703400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332054 (or 332045 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 41.

The spelling of 1216377703400 in words is "one trillion, two hundred sixteen billion, three hundred seventy-seven million, seven hundred three thousand, four hundred".