1201337555156 has 24 divisors (see below), whose sum is σ = 2119688503296. Its totient is φ = 595715813280.

The previous prime is 1201337555147. The next prime is 1201337555167. The reversal of 1201337555156 is 6515557331021.

It is a congruent 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, 918221 + ... + 1801611.

It is an arithmetic number, because the mean of its divisors is an integer number (88320354304).

Almost surely, 2^{1201337555156} is an apocalyptic number.

It is an amenable number.

1201337555156 is a deficient number, since it is larger than the sum of its proper divisors (918350948140).

1201337555156 is a wasteful number, since it uses less digits than its factorization.

1201337555156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886199 (or 886197 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 44.

The spelling of 1201337555156 in words is "one trillion, two hundred one billion, three hundred thirty-seven million, five hundred fifty-five thousand, one hundred fifty-six".