61049643585840 has 480 divisors, whose sum is σ = 252510467629056. Its totient is φ = 12872027105280.

The previous prime is 61049643585829. The next prime is 61049643585859. The reversal of 61049643585840 is 4858534694016.

61049643585840 is a `hidden beast` number, since 6 + 1 + 0 + 4 + 9 + 6 + 4 + 3 + 585 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96063207 + ... + 96696633.

Almost surely, 2^{61049643585840} is an apocalyptic number.

61049643585840 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 61049643585840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126255233814528).

61049643585840 is an abundant number, since it is smaller than the sum of its proper divisors (191460824043216).

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

61049643585840 is a wasteful number, since it uses less digits than its factorization.

61049643585840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634937 (or 634928 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 61049643585840 in words is "sixty-one trillion, forty-nine billion, six hundred forty-three million, five hundred eighty-five thousand, eight hundred forty".