61140474701 has 2 divisors, whose sum is σ = 61140474702. Its totient is φ = 61140474700.

The previous prime is 61140474697. The next prime is 61140474763. The reversal of 61140474701 is 10747404116.

61140474701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32508450601 + 28632024100 = 180301^2 + 169210^2 .

It is a cyclic number.

It is not a de Polignac number, because 61140474701 - 2² = 61140474697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61140474401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30570237350 + 30570237351.

It is an arithmetic number, because the mean of its divisors is an integer number (30570237351).

Almost surely, 2^61140474701 is an apocalyptic number.

It is an amenable number.

61140474701 is a deficient number, since it is larger than the sum of its proper divisors (1).

61140474701 is an equidigital number, since it uses as much as digits as its factorization.

61140474701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

Adding to 61140474701 its reverse (10747404116), we get a palindrome (71887878817).

The spelling of 61140474701 in words is "sixty-one billion, one hundred forty million, four hundred seventy-four thousand, seven hundred one".