61236113400 has 720 divisors, whose sum is σ = 269935613640. Its totient is φ = 12722572800.

The previous prime is 61236113369. The next prime is 61236113413. The reversal of 61236113400 is 431163216.

61236113400 is a `hidden beast` number, since 6 + 1 + 2 + 3 + 611 + 3 + 40 + 0 = 666.

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 179 ways as a sum of consecutive naturals, for example, 8728294 + ... + 8735306.

Almost surely, 2^61236113400 is an apocalyptic number.

61236113400 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 61236113400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134967806820).

61236113400 is an abundant number, since it is smaller than the sum of its proper divisors (208699500240).

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

61236113400 is a wasteful number, since it uses less digits than its factorization.

61236113400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 7041 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 61236113400 its reverse (431163216), we get a palindrome (61667276616).

The spelling of 61236113400 in words is "sixty-one billion, two hundred thirty-six million, one hundred thirteen thousand, four hundred".