201613512100 has 144 divisors (see below), whose sum is σ = 587414653056. Its totient is φ = 58006656000.

The previous prime is 201613512091. The next prime is 201613512127. The reversal of 201613512100 is 1215316102.

It is a happy number.

It is a super-2 number, since 2×201613512100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 906961 + ... + 1107160.

It is an arithmetic number, because the mean of its divisors is an integer number (4079268424).

Almost surely, 2^201613512100 is an apocalyptic number.

201613512100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201613512100 is an abundant number, since it is smaller than the sum of its proper divisors (385801140956).

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

201613512100 is a wasteful number, since it uses less digits than its factorization.

201613512100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014166 (or 2014159 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 201613512100 its reverse (1215316102), we get a palindrome (202828828202).

The spelling of 201613512100 in words is "two hundred one billion, six hundred thirteen million, five hundred twelve thousand, one hundred".