1630720664362 has 4 divisors (see below), whose sum is σ = 2446080996546. Its totient is φ = 815360332180.

The previous prime is 1630720664323. The next prime is 1630720664411. The reversal of 1630720664362 is 2634660270361.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1545071374081 + 85649290281 = 1243009^2 + 292659^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407680166089 + ... + 407680166092.

Almost surely, 2^{1630720664362} is an apocalyptic number.

1630720664362 is a deficient number, since it is larger than the sum of its proper divisors (815360332184).

1630720664362 is an equidigital number, since it uses as much as digits as its factorization.

1630720664362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815360332183.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 1630720664362 in words is "one trillion, six hundred thirty billion, seven hundred twenty million, six hundred sixty-four thousand, three hundred sixty-two".