2661521604602 has 8 divisors (see below), whose sum is σ = 4562608465056. Its totient is φ = 1140652116252.

The previous prime is 2661521604563. The next prime is 2661521604611. The reversal of 2661521604602 is 2064061251662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2661521604602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95054343008 + ... + 95054343035.

It is an arithmetic number, because the mean of its divisors is an integer number (570326058132).

Almost surely, 2^{2661521604602} is an apocalyptic number.

2661521604602 is a deficient number, since it is larger than the sum of its proper divisors (1901086860454).

2661521604602 is a wasteful number, since it uses less digits than its factorization.

2661521604602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190108686052.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 2661521604602 in words is "two trillion, six hundred sixty-one billion, five hundred twenty-one million, six hundred four thousand, six hundred two".