61061754368 has 160 divisors (see below), whose sum is σ = 131254992000. Its totient is φ = 28278390784.

The previous prime is 61061754367. The next prime is 61061754407. The reversal of 61061754368 is 86345716016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61061754367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255488393 + ... + 255488631.

It is an arithmetic number, because the mean of its divisors is an integer number (820343700).

Almost surely, 2^61061754368 is an apocalyptic number.

61061754368 is a gapful number since it is divisible by the number (68) 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 61061754368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65627496000).

61061754368 is an abundant number, since it is smaller than the sum of its proper divisors (70193237632).

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

61061754368 is a wasteful number, since it uses less digits than its factorization.

61061754368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 61061754368 in words is "sixty-one billion, sixty-one million, seven hundred fifty-four thousand, three hundred sixty-eight".