1201156035665 has 8 divisors (see below), whose sum is σ = 1443138629568. Its totient is φ = 959757237360.

The previous prime is 1201156035641. The next prime is 1201156035679. The reversal of 1201156035665 is 5665306511021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201156035665 - 2¹⁰ = 1201156034641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145944371 + ... + 145952600.

It is an arithmetic number, because the mean of its divisors is an integer number (180392328696).

Almost surely, 2^{1201156035665} is an apocalyptic number.

It is an amenable number.

1201156035665 is a deficient number, since it is larger than the sum of its proper divisors (241982593903).

1201156035665 is an equidigital number, since it uses as much as digits as its factorization.

1201156035665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291897799.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 1201156035665 in words is "one trillion, two hundred one billion, one hundred fifty-six million, thirty-five thousand, six hundred sixty-five".