616505051990 has 8 divisors (see below), whose sum is σ = 1109709093600. Its totient is φ = 246602020792.

The previous prime is 616505051983. The next prime is 616505052019. The reversal of 616505051990 is 99150505616.

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

It is a Curzon number.

It is a congruent number.

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, 30825252590 + ... + 30825252609.

It is an arithmetic number, because the mean of its divisors is an integer number (138713636700).

Almost surely, 2^616505051990 is an apocalyptic number.

616505051990 is a deficient number, since it is larger than the sum of its proper divisors (493204041610).

616505051990 is a wasteful number, since it uses less digits than its factorization.

616505051990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61650505206.

The product of its (nonzero) digits is 364500, while the sum is 47.

The spelling of 616505051990 in words is "six hundred sixteen billion, five hundred five million, fifty-one thousand, nine hundred ninety".