201388023774 has 24 divisors (see below), whose sum is σ = 498675106800. Its totient is φ = 57539435328.

The previous prime is 201388023773. The next prime is 201388023827. The reversal of 201388023774 is 477320883102.

It is a super-2 number, since 2×201388023774² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201388023773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 799158699 + ... + 799158950.

It is an arithmetic number, because the mean of its divisors is an integer number (20778129450).

Almost surely, 2^201388023774 is an apocalyptic number.

201388023774 is an abundant number, since it is smaller than the sum of its proper divisors (297287083026).

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

201388023774 is a wasteful number, since it uses less digits than its factorization.

201388023774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598317664 (or 1598317661 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 201388023774 in words is "two hundred one billion, three hundred eighty-eight million, twenty-three thousand, seven hundred seventy-four".