61810092000 has 288 divisors, whose sum is σ = 224471126880. Its totient is φ = 16098969600.

The previous prime is 61810091947. The next prime is 61810092023. The reversal of 61810092000 is 29001816.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1528036 + ... + 1567964.

It is an arithmetic number, because the mean of its divisors is an integer number (779413635).

Almost surely, 2^61810092000 is an apocalyptic number.

61810092000 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 61810092000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112235563440).

61810092000 is an abundant number, since it is smaller than the sum of its proper divisors (162661034880).

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

61810092000 is a wasteful number, since it uses less digits than its factorization.

61810092000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40003 (or 39982 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 61810092000 its reverse (29001816), we get a palindrome (61839093816).

The spelling of 61810092000 in words is "sixty-one billion, eight hundred ten million, ninety-two thousand".