61362147520 has 112 divisors (see below), whose sum is σ = 147211926048. Its totient is φ = 24361943040.

The previous prime is 61362147467. The next prime is 61362147521. The reversal of 61362147520 is 2574126316.

It is a self number, because there is not a number n which added to its sum of digits gives 61362147520.

It is not an unprimeable number, because it can be changed into a prime (61362147521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26759494 + ... + 26761786.

Almost surely, 2^61362147520 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 61362147520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73605963024).

61362147520 is an abundant number, since it is smaller than the sum of its proper divisors (85849778528).

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

61362147520 is a wasteful number, since it uses less digits than its factorization.

61362147520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 61362147520 in words is "sixty-one billion, three hundred sixty-two million, one hundred forty-seven thousand, five hundred twenty".