2537642066 has 8 divisors (see below), whose sum is σ = 3812121084. Its totient is φ = 1266935040.

The previous prime is 2537642047. The next prime is 2537642089. The reversal of 2537642066 is 6602467352.

It can be written as a sum of positive squares in 2 ways, for example, as 2468003041 + 69639025 = 49679^2 + 8345^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941315 + ... + 944006.

Almost surely, 2^2537642066 is an apocalyptic number.

2537642066 is a deficient number, since it is larger than the sum of its proper divisors (1274479018).

2537642066 is a wasteful number, since it uses less digits than its factorization.

2537642066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885996.

The product of its (nonzero) digits is 362880, while the sum is 41.

The square root of 2537642066 is about 50375.0143027275. The cubic root of 2537642066 is about 1363.9866561160.

The spelling of 2537642066 in words is "two billion, five hundred thirty-seven million, six hundred forty-two thousand, sixty-six".