61375165380 has 72 divisors (see below), whose sum is σ = 186206536152. Its totient is φ = 16363616256.

The previous prime is 61375165367. The next prime is 61375165381. The reversal of 61375165380 is 8356157316.

61375165380 is a `hidden beast` number, since 6 + 1 + 3 + 7 + 516 + 53 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 26391951936 + 34983213444 = 162456^2 + 187038^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (61375165381) 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 23 ways as a sum of consecutive naturals, for example, 1017012 + ... + 1075668.

It is an arithmetic number, because the mean of its divisors is an integer number (2586201891).

Almost surely, 2^61375165380 is an apocalyptic number.

61375165380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61375165380 is an abundant number, since it is smaller than the sum of its proper divisors (124831370772).

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

61375165380 is a wasteful number, since it uses less digits than its factorization.

61375165380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64485 (or 64480 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 61375165380 in words is "sixty-one billion, three hundred seventy-five million, one hundred sixty-five thousand, three hundred eighty".