201894664258740 has 48 divisors (see below), whose sum is σ = 565428408951168. Its totient is φ = 53826829609344.

The previous prime is 201894664258739. The next prime is 201894664258741. The reversal of 201894664258740 is 47852466498102.

It is an interprime number because it is at equal distance from previous prime (201894664258739) and next prime (201894664258741).

It is a super-2 number, since 2×201894664258740² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201894664258741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366832927 + ... + 367382886.

It is an arithmetic number, because the mean of its divisors is an integer number (11779758519816).

Almost surely, 2^{201894664258740} is an apocalyptic number.

201894664258740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201894664258740 is an abundant number, since it is smaller than the sum of its proper divisors (363533744692428).

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

201894664258740 is a wasteful number, since it uses less digits than its factorization.

201894664258740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734220408 (or 734220406 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 66.

The spelling of 201894664258740 in words is "two hundred one trillion, eight hundred ninety-four billion, six hundred sixty-four million, two hundred fifty-eight thousand, seven hundred forty".