1216169431490 has 32 divisors (see below), whose sum is σ = 2359037894976. Its totient is φ = 448753798080.

The previous prime is 1216169431489. The next prime is 1216169431513. The reversal of 1216169431490 is 941349616121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2856212 + ... + 3254271.

It is an arithmetic number, because the mean of its divisors is an integer number (73719934218).

Almost surely, 2^{1216169431490} is an apocalyptic number.

1216169431490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216169431490 is a deficient number, since it is larger than the sum of its proper divisors (1142868463486).

1216169431490 is a wasteful number, since it uses less digits than its factorization.

1216169431490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112034.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 1216169431490 in words is "one trillion, two hundred sixteen billion, one hundred sixty-nine million, four hundred thirty-one thousand, four hundred ninety".