61302040120 has 128 divisors (see below), whose sum is σ = 149700830400. Its totient is φ = 22502301696.

The previous prime is 61302040091. The next prime is 61302040133. The reversal of 61302040120 is 2104020316.

61302040120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61302040120² (a number of 22 digits) contains 22 as substring.

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, 20729682 + ... + 20732638.

Almost surely, 2^61302040120 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 61302040120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74850415200).

61302040120 is an abundant number, since it is smaller than the sum of its proper divisors (88398790280).

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

61302040120 is a wasteful number, since it uses less digits than its factorization.

61302040120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737 (or 3733 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 61302040120 its reverse (2104020316), we get a palindrome (63406060436).

The spelling of 61302040120 in words is "sixty-one billion, three hundred two million, forty thousand, one hundred twenty".