6161951518791 has 16 divisors (see below), whose sum is σ = 8234540294400. Its totient is φ = 4098665894400.

The previous prime is 6161951518787. The next prime is 6161951518847. The reversal of 6161951518791 is 1978151591616.

It is not a de Polignac number, because 6161951518791 - 2² = 6161951518787 is a prime.

It is a super-3 number, since 3×6161951518791³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161951518711) 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, 44925366 + ... + 45062316.

It is an arithmetic number, because the mean of its divisors is an integer number (514658768400).

Almost surely, 2^{6161951518791} is an apocalyptic number.

6161951518791 is a deficient number, since it is larger than the sum of its proper divisors (2072588775609).

6161951518791 is a wasteful number, since it uses less digits than its factorization.

6161951518791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170806.

The product of its digits is 4082400, while the sum is 60.

The spelling of 6161951518791 in words is "six trillion, one hundred sixty-one billion, nine hundred fifty-one million, five hundred eighteen thousand, seven hundred ninety-one".