61354886400 has 216 divisors, whose sum is σ = 224982752960. Its totient is φ = 16361256960.

The previous prime is 61354886387. The next prime is 61354886407. The reversal of 61354886400 is 468845316.

61354886400 is a `hidden beast` number, since 61 + 3 + 548 + 8 + 6 + 40 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61354886407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4732 + ... + 350331.

Almost surely, 2^61354886400 is an apocalyptic number.

61354886400 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 61354886400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112491376480).

61354886400 is an abundant number, since it is smaller than the sum of its proper divisors (163627866560).

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

61354886400 is a wasteful number, since it uses less digits than its factorization.

61354886400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355098 (or 355073 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 61354886400 in words is "sixty-one billion, three hundred fifty-four million, eight hundred eighty-six thousand, four hundred".