190423779334272 has 1536 divisors, whose sum is σ = 696900830976000. Its totient is φ = 50875225251840.

The previous prime is 190423779334259. The next prime is 190423779334279. The reversal of 190423779334272 is 272433977324091.

190423779334272 is a `hidden beast` number, since 1 + 9 + 0 + 4 + 23 + 7 + 7 + 9 + 334 + 272 = 666.

It is a super-2 number, since 2×190423779334272² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190423779334279) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6761473663 + ... + 6761501825.

It is an arithmetic number, because the mean of its divisors is an integer number (453711478500).

Almost surely, 2^{190423779334272} is an apocalyptic number.

190423779334272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190423779334272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348450415488000).

190423779334272 is an abundant number, since it is smaller than the sum of its proper divisors (506477051641728).

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

190423779334272 is a wasteful number, since it uses less digits than its factorization.

190423779334272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28287 (or 28258 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 63.

The spelling of 190423779334272 in words is "one hundred ninety trillion, four hundred twenty-three billion, seven hundred seventy-nine million, three hundred thirty-four thousand, two hundred seventy-two".