146737147235521 has 4 divisors (see below), whose sum is σ = 149142674239444. Its totient is φ = 144331620231600.

The previous prime is 146737147235501. The next prime is 146737147235561. The reversal of 146737147235521 is 125532741737641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64562269554225 + 82174877681296 = 8035065^2 + 9065036^2 .

It is a cyclic number.

It is not a de Polignac number, because 146737147235521 - 2¹¹ = 146737147233473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146737147235501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202763501870 + ... + 1202763501991.

It is an arithmetic number, because the mean of its divisors is an integer number (37285668559861).

Almost surely, 2^{146737147235521} is an apocalyptic number.

It is an amenable number.

146737147235521 is a deficient number, since it is larger than the sum of its proper divisors (2405527003923).

146737147235521 is an equidigital number, since it uses as much as digits as its factorization.

146737147235521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405527003922.

The product of its digits is 29635200, while the sum is 58.

The spelling of 146737147235521 in words is "one hundred forty-six trillion, seven hundred thirty-seven billion, one hundred forty-seven million, two hundred thirty-five thousand, five hundred twenty-one".