201641306516 has 12 divisors (see below), whose sum is σ = 380016308532. Its totient is φ = 93065218368.

The previous prime is 201641306483. The next prime is 201641306539. The reversal of 201641306516 is 615603146102.

It can be written as a sum of positive squares in 2 ways, for example, as 67132810000 + 134508496516 = 259100^2 + 366754^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938858665 + ... + 1938858768.

It is an arithmetic number, because the mean of its divisors is an integer number (31668025711).

Almost surely, 2^201641306516 is an apocalyptic number.

201641306516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

201641306516 is a deficient number, since it is larger than the sum of its proper divisors (178375002016).

201641306516 is a wasteful number, since it uses less digits than its factorization.

201641306516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877717450 (or 3877717448 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 201641306516 in words is "two hundred one billion, six hundred forty-one million, three hundred six thousand, five hundred sixteen".