61053531756720 has 160 divisors (see below), whose sum is σ = 189576201221568. Its totient is φ = 16254261264384.

The previous prime is 61053531756593. The next prime is 61053531756797. The reversal of 61053531756720 is 2765713535016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1133596032 + ... + 1133649888.

Almost surely, 2^{61053531756720} is an apocalyptic number.

61053531756720 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 61053531756720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94788100610784).

61053531756720 is an abundant number, since it is smaller than the sum of its proper divisors (128522669464848).

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

61053531756720 is a wasteful number, since it uses less digits than its factorization.

61053531756720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61527 (or 61521 counting only the distinct ones).

The product of its (nonzero) digits is 3969000, while the sum is 51.

The spelling of 61053531756720 in words is "sixty-one trillion, fifty-three billion, five hundred thirty-one million, seven hundred fifty-six thousand, seven hundred twenty".