1216555746002 has 32 divisors (see below), whose sum is σ = 2063281144320. Its totient is φ = 534924714240.

The previous prime is 1216555745957. The next prime is 1216555746041. The reversal of 1216555746002 is 2006475556121.

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, 19869908 + ... + 19931039.

It is an arithmetic number, because the mean of its divisors is an integer number (64477535760).

Almost surely, 2^{1216555746002} is an apocalyptic number.

1216555746002 is a deficient number, since it is larger than the sum of its proper divisors (846725398318).

1216555746002 is a wasteful number, since it uses less digits than its factorization.

1216555746002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39801026.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 1216555746002 in words is "one trillion, two hundred sixteen billion, five hundred fifty-five million, seven hundred forty-six thousand, two".