61562235083778 has 192 divisors, whose sum is σ = 164153376721152. Its totient is φ = 16407405527040.

The previous prime is 61562235083749. The next prime is 61562235083813. The reversal of 61562235083778 is 87738053226516.

61562235083778 is a `hidden beast` number, since 6 + 1 + 5 + 6 + 2 + 23 + 508 + 37 + 78 = 666.

It is a Curzon number.

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, 13191826 + ... + 17238002.

It is an arithmetic number, because the mean of its divisors is an integer number (854965503756).

Almost surely, 2^{61562235083778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61562235083778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82076688360576).

61562235083778 is an abundant number, since it is smaller than the sum of its proper divisors (102591141637374).

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

61562235083778 is a wasteful number, since it uses less digits than its factorization.

61562235083778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046489 (or 4046486 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 63.

The spelling of 61562235083778 in words is "sixty-one trillion, five hundred sixty-two billion, two hundred thirty-five million, eighty-three thousand, seven hundred seventy-eight".