61263215702240 has 192 divisors, whose sum is σ = 154073930250240. Its totient is φ = 22939838423040.

The previous prime is 61263215702233. The next prime is 61263215702263. The reversal of 61263215702240 is 4220751236216.

61263215702240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391582751 + ... + 391739169.

It is an arithmetic number, because the mean of its divisors is an integer number (802468386720).

Almost surely, 2^{61263215702240} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61263215702240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77036965125120).

61263215702240 is an abundant number, since it is smaller than the sum of its proper divisors (92810714548000).

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

61263215702240 is a wasteful number, since it uses less digits than its factorization.

61263215702240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157225 (or 157217 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

Adding to 61263215702240 its reverse (4220751236216), we get a palindrome (65483966938456).

The spelling of 61263215702240 in words is "sixty-one trillion, two hundred sixty-three billion, two hundred fifteen million, seven hundred two thousand, two hundred forty".