537902851661 has 16 divisors (see below), whose sum is σ = 642085920000. Its totient is φ = 440592966528.

The previous prime is 537902851609. The next prime is 537902851679. The reversal of 537902851661 is 166158209735.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-537902851661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537902851061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423586 + ... + 1761363.

It is an arithmetic number, because the mean of its divisors is an integer number (40130370000).

Almost surely, 2^537902851661 is an apocalyptic number.

It is an amenable number.

537902851661 is a deficient number, since it is larger than the sum of its proper divisors (104183068339).

537902851661 is a wasteful number, since it uses less digits than its factorization.

537902851661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186028.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 537902851661 in words is "five hundred thirty-seven billion, nine hundred two million, eight hundred fifty-one thousand, six hundred sixty-one".