201615010642 has 8 divisors (see below), whose sum is σ = 305098821756. Its totient is φ = 99915403392.

The previous prime is 201615010637. The next prime is 201615010693. The reversal of 201615010642 is 246010516102.

It can be written as a sum of positive squares in 2 ways, for example, as 173789768161 + 27825242481 = 416881^2 + 166809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×201615010642⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 201615010642.

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, 446050683 + ... + 446051134.

Almost surely, 2^201615010642 is an apocalyptic number.

201615010642 is a deficient number, since it is larger than the sum of its proper divisors (103483811114).

201615010642 is a wasteful number, since it uses less digits than its factorization.

201615010642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892101932.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 201615010642 its reverse (246010516102), we get a palindrome (447625526744).

The spelling of 201615010642 in words is "two hundred one billion, six hundred fifteen million, ten thousand, six hundred forty-two".