61326022100 has 72 divisors (see below), whose sum is σ = 152289711168. Its totient is φ = 20998252800.

The previous prime is 61326022097. The next prime is 61326022103. The reversal of 61326022100 is 122062316.

61326022100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61326022097) and next prime (61326022103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61326022103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475139 + ... + 590261.

Almost surely, 2^61326022100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61326022100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76144855584).

61326022100 is an abundant number, since it is smaller than the sum of its proper divisors (90963689068).

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

61326022100 is a wasteful number, since it uses less digits than its factorization.

61326022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115905 (or 115898 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 61326022100 its reverse (122062316), we get a palindrome (61448084416).

The spelling of 61326022100 in words is "sixty-one billion, three hundred twenty-six million, twenty-two thousand, one hundred".