146749520261 has 2 divisors, whose sum is σ = 146749520262. Its totient is φ = 146749520260.

The previous prime is 146749520233. The next prime is 146749520311. The reversal of 146749520261 is 162025947641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138510508900 + 8239011361 = 372170^2 + 90769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146749520261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146749520161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73374760130 + 73374760131.

It is an arithmetic number, because the mean of its divisors is an integer number (73374760131).

Almost surely, 2^146749520261 is an apocalyptic number.

It is an amenable number.

146749520261 is a deficient number, since it is larger than the sum of its proper divisors (1).

146749520261 is an equidigital number, since it uses as much as digits as its factorization.

146749520261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 146749520261 in words is "one hundred forty-six billion, seven hundred forty-nine million, five hundred twenty thousand, two hundred sixty-one".