61880121320 has 16 divisors (see below), whose sum is σ = 139230273060. Its totient is φ = 24752048512.

The previous prime is 61880121313. The next prime is 61880121353. The reversal of 61880121320 is 2312108816.

It can be written as a sum of positive squares in 2 ways, for example, as 60869771524 + 1010349796 = 246718^2 + 31786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773501477 + ... + 773501556.

Almost surely, 2^61880121320 is an apocalyptic number.

It is an amenable number.

61880121320 is an abundant number, since it is smaller than the sum of its proper divisors (77350151740).

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

61880121320 is a wasteful number, since it uses less digits than its factorization.

61880121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547003044 (or 1547003040 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 61880121320 in words is "sixty-one billion, eight hundred eighty million, one hundred twenty-one thousand, three hundred twenty".