201615621652 has 24 divisors (see below), whose sum is σ = 371530658240. Its totient is φ = 95467818240.

The previous prime is 201615621643. The next prime is 201615621679. The reversal of 201615621652 is 256126516102.

201615621652 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201615621652² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263133 + ... + 687364.

Almost surely, 2^201615621652 is an apocalyptic number.

It is an amenable number.

201615621652 is a deficient number, since it is larger than the sum of its proper divisors (169915036588).

201615621652 is a wasteful number, since it uses less digits than its factorization.

201615621652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953311 (or 953309 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 201615621652 in words is "two hundred one billion, six hundred fifteen million, six hundred twenty-one thousand, six hundred fifty-two".