1217042466372 has 72 divisors (see below), whose sum is σ = 3262817376000. Its totient is φ = 381179705088.

The previous prime is 1217042466337. The next prime is 1217042466379. The reversal of 1217042466372 is 2736642407121.

1217042466372 is a `hidden beast` number, since 1 + 2 + 1 + 7 + 0 + 4 + 2 + 4 + 6 + 637 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1217042466379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1293372 + ... + 2026547.

It is an arithmetic number, because the mean of its divisors is an integer number (45316908000).

Almost surely, 2^{1217042466372} is an apocalyptic number.

1217042466372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1217042466372 is an abundant number, since it is smaller than the sum of its proper divisors (2045774909628).

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

1217042466372 is a wasteful number, since it uses less digits than its factorization.

1217042466372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320545 (or 3320540 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 1217042466372 in words is "one trillion, two hundred seventeen billion, forty-two million, four hundred sixty-six thousand, three hundred seventy-two".