61890566091192 has 72 divisors (see below), whose sum is σ = 178060300860000. Its totient is φ = 19416648178944.

The previous prime is 61890566091187. The next prime is 61890566091197. The reversal of 61890566091192 is 29119066509816.

61890566091192 is a `hidden beast` number, since 6 + 1 + 8 + 9 + 0 + 5 + 6 + 609 + 1 + 19 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (61890566091187) and next prime (61890566091197).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61890566091197) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1487161192 + ... + 1487202807.

Almost surely, 2^{61890566091192} is an apocalyptic number.

It is an amenable number.

61890566091192 is an abundant number, since it is smaller than the sum of its proper divisors (116169734768808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61890566091192 is a wasteful number, since it uses less digits than its factorization.

61890566091192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974364045 (or 2974364021 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 63.

The spelling of 61890566091192 in words is "sixty-one trillion, eight hundred ninety billion, five hundred sixty-six million, ninety-one thousand, one hundred ninety-two".