201397147644 has 96 divisors (see below), whose sum is σ = 616718592000. Its totient is φ = 49557735360.

The previous prime is 201397147619. The next prime is 201397147691. The reversal of 201397147644 is 446741793102.

It is a super-2 number, since 2×201397147644² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201397147593 and 201397147602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5718294 + ... + 5753405.

It is an arithmetic number, because the mean of its divisors is an integer number (6424152000).

Almost surely, 2^201397147644 is an apocalyptic number.

It is an amenable number.

201397147644 is an abundant number, since it is smaller than the sum of its proper divisors (415321444356).

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

201397147644 is a wasteful number, since it uses less digits than its factorization.

201397147644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471743 (or 11471741 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 201397147644 in words is "two hundred one billion, three hundred ninety-seven million, one hundred forty-seven thousand, six hundred forty-four".