61630734380 has 12 divisors (see below), whose sum is σ = 129424542240. Its totient is φ = 24652293744.

The previous prime is 61630734367. The next prime is 61630734383. The reversal of 61630734380 is 8343703616.

It is a super-2 number, since 2×61630734380² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61630734383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1540768340 + ... + 1540768379.

It is an arithmetic number, because the mean of its divisors is an integer number (10785378520).

Almost surely, 2^61630734380 is an apocalyptic number.

It is an amenable number.

61630734380 is an abundant number, since it is smaller than the sum of its proper divisors (67793807860).

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

61630734380 is a wasteful number, since it uses less digits than its factorization.

61630734380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081536728 (or 3081536726 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 61630734380 in words is "sixty-one billion, six hundred thirty million, seven hundred thirty-four thousand, three hundred eighty".