1216616477010 has 128 divisors (see below), whose sum is σ = 3316508229888. Its totient is φ = 283026432000.

The previous prime is 1216616476997. The next prime is 1216616477029. The reversal of 1216616477010 is 107746166121.

It is a happy number.

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, 88282 + ... + 1562378.

It is an arithmetic number, because the mean of its divisors is an integer number (25910220546).

Almost surely, 2^{1216616477010} is an apocalyptic number.

1216616477010 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 1216616477010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658254114944).

1216616477010 is an abundant number, since it is smaller than the sum of its proper divisors (2099891752878).

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

1216616477010 is a wasteful number, since it uses less digits than its factorization.

1216616477010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474220.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 1216616477010 in words is "one trillion, two hundred sixteen billion, six hundred sixteen million, four hundred seventy-seven thousand, ten".