61302144543402 has 32 divisors (see below), whose sum is σ = 140731061731200. Its totient is φ = 17438414165568.

The previous prime is 61302144543391. The next prime is 61302144543403. The reversal of 61302144543402 is 20434544120316.

It is not an unprimeable number, because it can be changed into a prime (61302144543403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3186835077 + ... + 3186854312.

It is an arithmetic number, because the mean of its divisors is an integer number (4397845679100).

Almost surely, 2^{61302144543402} is an apocalyptic number.

61302144543402 is an abundant number, since it is smaller than the sum of its proper divisors (79428917187798).

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

61302144543402 is a wasteful number, since it uses less digits than its factorization.

61302144543402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373689630.

The product of its (nonzero) digits is 276480, while the sum is 39.

Adding to 61302144543402 its reverse (20434544120316), we get a palindrome (81736688663718).

The spelling of 61302144543402 in words is "sixty-one trillion, three hundred two billion, one hundred forty-four million, five hundred forty-three thousand, four hundred two".