61102271700 has 144 divisors (see below), whose sum is σ = 198235576000. Its totient is φ = 16144375680.

The previous prime is 61102271653. The next prime is 61102271749. The reversal of 61102271700 is 717220116.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 190491 + ... + 398109.

Almost surely, 2^61102271700 is an apocalyptic number.

61102271700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61102271700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99117788000).

61102271700 is an abundant number, since it is smaller than the sum of its proper divisors (137133304300).

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

61102271700 is a wasteful number, since it uses less digits than its factorization.

61102271700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207751 (or 207738 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

Adding to 61102271700 its reverse (717220116), we get a palindrome (61819491816).

The spelling of 61102271700 in words is "sixty-one billion, one hundred two million, two hundred seventy-one thousand, seven hundred".