61154314500 has 96 divisors (see below), whose sum is σ = 179148453120. Its totient is φ = 16210099200.

The previous prime is 61154314457. The next prime is 61154314511. The reversal of 61154314500 is 541345116.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128436 + ... + 372564.

It is an arithmetic number, because the mean of its divisors is an integer number (1866129720).

Almost surely, 2^61154314500 is an apocalyptic number.

61154314500 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 61154314500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89574226560).

61154314500 is an abundant number, since it is smaller than the sum of its proper divisors (117994138620).

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

61154314500 is a wasteful number, since it uses less digits than its factorization.

61154314500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244318 (or 244306 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 61154314500 its reverse (541345116), we get a palindrome (61695659616).

The spelling of 61154314500 in words is "sixty-one billion, one hundred fifty-four million, three hundred fourteen thousand, five hundred".