61380591076 has 18 divisors (see below), whose sum is σ = 124953346518. Its totient is φ = 26305967520.

The previous prime is 61380590911. The next prime is 61380591079. The reversal of 61380591076 is 67019508316.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38328242176 + 23052348900 = 195776^2 + 151830^2 .

It is not an unprimeable number, because it can be changed into a prime (61380591079) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 156582945 + ... + 156583336.

Almost surely, 2^61380591076 is an apocalyptic number.

It is an amenable number.

61380591076 is an abundant number, since it is smaller than the sum of its proper divisors (63572755442).

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

61380591076 is a wasteful number, since it uses less digits than its factorization.

61380591076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313166299 (or 313166290 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 61380591076 in words is "sixty-one billion, three hundred eighty million, five hundred ninety-one thousand, seventy-six".