61611010100 has 36 divisors (see below), whose sum is σ = 133728940800. Its totient is φ = 24638312160.

The previous prime is 61611010057. The next prime is 61611010129. The reversal of 61611010100 is 101011616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341831 + ... + 489969.

It is an arithmetic number, because the mean of its divisors is an integer number (3714692800).

Almost surely, 2^61611010100 is an apocalyptic number.

It is an amenable number.

61611010100 is an abundant number, since it is smaller than the sum of its proper divisors (72117930700).

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

61611010100 is a wasteful number, since it uses less digits than its factorization.

61611010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152312 (or 152305 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 61611010100 its reverse (101011616), we get a palindrome (61712021716).

The spelling of 61611010100 in words is "sixty-one billion, six hundred eleven million, ten thousand, one hundred".