1156222156642 has 32 divisors (see below), whose sum is σ = 2086586265600. Its totient is φ = 469405255248.

The previous prime is 1156222156549. The next prime is 1156222156651. The reversal of 1156222156642 is 2466512226511.

It is a happy number.

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, 3207909 + ... + 3550087.

It is an arithmetic number, because the mean of its divisors is an integer number (65205820800).

Almost surely, 2^{1156222156642} is an apocalyptic number.

1156222156642 is a deficient number, since it is larger than the sum of its proper divisors (930364108958).

1156222156642 is a wasteful number, since it uses less digits than its factorization.

1156222156642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354910.

The product of its digits is 345600, while the sum is 43.

The spelling of 1156222156642 in words is "one trillion, one hundred fifty-six billion, two hundred twenty-two million, one hundred fifty-six thousand, six hundred forty-two".