61156036200 has 384 divisors, whose sum is σ = 224055659520. Its totient is φ = 13508812800.

The previous prime is 61156036187. The next prime is 61156036211. The reversal of 61156036200 is 263065116.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17516455 + ... + 17519945.

It is an arithmetic number, because the mean of its divisors is an integer number (583478280).

Almost surely, 2^61156036200 is an apocalyptic number.

61156036200 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 61156036200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112027829760).

61156036200 is an abundant number, since it is smaller than the sum of its proper divisors (162899623320).

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

61156036200 is a wasteful number, since it uses less digits than its factorization.

61156036200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657 (or 3648 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 61156036200 in words is "sixty-one billion, one hundred fifty-six million, thirty-six thousand, two hundred".