61735247501 has 2 divisors, whose sum is σ = 61735247502. Its totient is φ = 61735247500.

The previous prime is 61735247489. The next prime is 61735247543. The reversal of 61735247501 is 10574253716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59560890601 + 2174356900 = 244051^2 + 46630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61735247501 is a prime.

It is a super-2 number, since 2×61735247501² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61735247201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30867623750 + 30867623751.

It is an arithmetic number, because the mean of its divisors is an integer number (30867623751).

Almost surely, 2^61735247501 is an apocalyptic number.

It is an amenable number.

61735247501 is a deficient number, since it is larger than the sum of its proper divisors (1).

61735247501 is an equidigital number, since it uses as much as digits as its factorization.

61735247501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 61735247501 in words is "sixty-one billion, seven hundred thirty-five million, two hundred forty-seven thousand, five hundred one".