146615518729 has 2 divisors, whose sum is σ = 146615518730. Its totient is φ = 146615518728.

The previous prime is 146615518663. The next prime is 146615518757. The reversal of 146615518729 is 927815516641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145035297225 + 1580221504 = 380835^2 + 39752^2 .

It is a cyclic number.

It is not a de Polignac number, because 146615518729 - 2¹¹ = 146615516681 is a prime.

It is a super-2 number, since 2×146615518729² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 146615518729.

It is not a weakly prime, because it can be changed into another prime (146615518529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73307759364 + 73307759365.

It is an arithmetic number, because the mean of its divisors is an integer number (73307759365).

Almost surely, 2^146615518729 is an apocalyptic number.

It is an amenable number.

146615518729 is a deficient number, since it is larger than the sum of its proper divisors (1).

146615518729 is an equidigital number, since it uses as much as digits as its factorization.

146615518729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 55.

The spelling of 146615518729 in words is "one hundred forty-six billion, six hundred fifteen million, five hundred eighteen thousand, seven hundred twenty-nine".